Thank you!!!
This resolved the issue with a Macbook Pro Retina (Mid 2012) and an Asus 
PA249Q.

Worked like a charm!

Wanted to add my success story and thanks for this thread as well.  I 
was able to fix the display output of a Mac Mini (OS X 10.8.5) on a 29" 
AOC (has virtually no Apple support).

FWIW, I came to this thread from a post at ireckon.net:
http://www.ireckon.net/2013/03/force-rgb-mode-in-mac-os-x-to-fix-the-picture-quality-of-an-external-monitor

For folks that might be struggling with creating an override file, the 
process is explained fairly clearly at that link.

Again, many thanks.

I have Late-2013 Retina MacBook Pro and HP Z30i external display 
attached with Mini-DisplayPort to DisplayPort cable. The display is 
identified as television, causing the crappy font rendering and low 
quality picture.

I tried running the (updated) script on this page, but after applying 
the new profile and restarting, the colors get totally messed up (gray 
shades are green, there is lots of magenta areas etc).

There is nothing obviously wrong with the display-file. Any ideas? 
Thanks.

hi,
it was working perfectly (mbpro 2010) but not anymore. :(
I tried to replace again the files but in preference/Display, the 
resolution appear and disappear immediately and definitely  when i want 
to chose it.

Any idea ?

Five reboot later, it works again.
Strange...

cM2jzN http://www.MHyzKpN7h4ERauvS72jUbdI0HeKxuZom.com

I'm having the same problem as Michael O'Hare and Juan Alberto. After 
running the script I get the following output and no new folder is 
generated:

=== TERMINAL OUTPUT =====

$ ruby patch-edid.rb
found display: vendorid 19501, productid 1413, EDID:
00ffffffffffff004c2d85053332594d0414010380331d782aee91a3544c99260f505423 
08008180814081009500b3000101010101013b3d00a08080214030203500fe1f1100001a 
000000fd00383c1e5110000a202020202020000000fc0053796e634d61737465720a2020 
000000ff004839585a3130323637340a2020017a02010400023a801871382d40582c4500 
fe1f1100001e023a80d072382d40102c4580fe1f1100001e011d007251d01e206e285500 
fe1f1100001e011d00bc52d01e20b8285540fe1f1100001e8c0ad090204031200c405500 
fe1f110000188c0ad08a20e02d10103e9600fe1f11000018000000000000000000000000 
00000004
Setting color support to RGB 4:4:4 only
Number of extension blocks: 1
removing extension block

Recalculated checksum: 0x83
new EDID:
00FFFFFFFFFFFF004C2D85053332594D0414010380331D7822EE91A3544C99260F505423 
08008180814081009500B3000101010101013B3D00A08080214030203500FE1F1100001A 
000000FD00383C1E5110000A202020202020000000FC0053796E634D61737465720A2020 
000000FF004839585A3130323637340A20200083
patch-edid.rb:33:in `initialize': No such file or directory - 
DisplayVendorID-4c2d/DisplayProductID-585 (Errno::ENOENT)
  from patch-edid.rb:33:in `open'
  from patch-edid.rb:33:in `<main>'

=== /TERMINAL OUTPUT =====

What am I doing wrong?
I'm running Maverick on a 2011 MacBook Pro.

I also tried the updated script from 
https://gist.github.com/adaugherity/7435890. This time I get a slightly 
different error message (2 extra lines at the end):

=== TERMINAL OUTPUT =====

$ ruby patch-edid.rb
found display 'SyncMaster': vendorid 19501, productid 1413, EDID:
00ffffffffffff004c2d85053332594d0414010380331d782aee91a3544c99260f505423 
08008180814081009500b3000101010101013b3d00a08080214030203500fe1f1100001a 
000000fd00383c1e5110000a202020202020000000fc0053796e634d61737465720a2020 
000000ff004839585a3130323637340a2020017a02010400023a801871382d40582c4500 
fe1f1100001e023a80d072382d40102c4580fe1f1100001e011d007251d01e206e285500 
fe1f1100001e011d00bc52d01e20b8285540fe1f1100001e8c0ad090204031200c405500 
fe1f110000188c0ad08a20e02d10103e9600fe1f11000018000000000000000000000000 
00000004
Setting color support to RGB 4:4:4 only
Number of extension blocks: 1
removing extension block

Recalculated checksum: 0x83
new EDID:
00FFFFFFFFFFFF004C2D85053332594D0414010380331D7822EE91A3544C99260F505423 
08008180814081009500B3000101010101013B3D00A08080214030203500FE1F1100001A 
000000FD00383C1E5110000A202020202020000000FC0053796E634D61737465720A2020 
000000FF004839585A3130323637340A20200083
patch-edid.rb:49:in `initialize': No such file or directory - 
DisplayVendorID-4c2d/DisplayProductID-585 (Errno::ENOENT)
  from patch-edid.rb:49:in `open'
  from patch-edid.rb:49:in `block in <main>'
  from patch-edid.rb:24:in `each'
  from patch-edid.rb:24:in `<main>'

=== /TERMINAL OUTPUT =====

OK, for some reason the patch script wasn't allowed to create the 
folder. So I changed the script (My First Ruby^TM) so that instead of 
creating the file and folder for you it tells you how to create them 
yourself. And it worked ;)

I've attached the altered script for those who run into the same 
problem.
Run it with:

> ruby patch-edid-alt.rb

... and it tells you what steps to take.

Cheers!

first of all sorry for my English. I am not an expert on mac. I tried to 
understand but I did not understand.
I have a dell 2413 received yesterday, and even if I imposed 
menu-settings-color RGB input color format see red-green. I set YPbPr to 
look good.
I just copied DisplayVendorID-10AC-in library display-overrides, but 
nothing happens.

I have to do ... please help me Mr. Andreas Schwarz

I can't thank you enough, I unpacked my U2713H hooked it up to my 15" 
non retina MacBook, expecting 27 inches of monitor glory and I 
got........ utter disappointment.Like everyone else I played with the 
monitor setting but had no luck at all.
Found your solution and it took all of 30 seconds to fix. Thank you!!!!

Works great on Mavericks. Thanks!!!

dear Andrew,

I just saw this post saying that the full resolution cannot be obtained 
with a DVI to Mini DisplayPort adaptor. I'm using a MacBook Pro 
('retina')

I think I have the same problem. My Philips 272P is capable of running 
up to 2560 x 1440 but it's 1920 x 1080.

No other cables worked well (HDMI to Mini DisplayPort), HDMI to HDMI.

I followed all the steps running the patch-edid.rb. But maybe (my last 
resort) the DisplayPort to Mini DisplayPort (/Thunderbolt) will work.

Shame on Apple for not making this a smooth process.

Any ideas other than changing the cable? Thank you!

Im just setting up my new Mac with a U2713H and have created the folder 
no issue. However i dont have a 'Display' folder let alone a 
'Display/Overrides' folder in my home Library location.

Do i just make the directory and place the folder in there?

Thanks in advance

Hi Leigh,

Maybe you are checking in your home folder--where you'll also find a 
Library folder. The folder where you'll find the "Displays" folder is 
the main (root)  directory. It should NOT be in users/yourname but in

your computer/Macintosh HD/System/Library

-Zyg

Thanks Zyg, will check it out tonight. You are correct that i was 
looking at the users/yourname (home) folder in finder.

Seems to work as expected. Have put sharpness to 50 as others have 
suggested as was super blurry on reboot (sharpness was at zero) still 
get a bit of ghosting if i scroll up and down this page fast (Dell 
U2713H)

Checked and the mode says RGB on the monitor now though. Are there any 
other settings i should be tweaking?

Looks much better though!

Thanks to all who have contributed.

I wrote about this fix on my blog, file are hosted there. Have fun!

http://www.andsotomarket.com/2014/03/Fix-Blurry-weird-text-and-picture-quality-when-connecting-Mac-to-external-Monitor-via-external-Displayport-HDMI-forcing-RGB-mode-instead-of-YCbCr-Override-Edid-Dell-U2713H-Dell-U2713HM.html

Hello and thanks to all people contributing here.

I have a new rMBP 15'connected to an external ViewSonic VP2770. MiniD > 
DP
2560x1440

Made the changes , all fine with the colours but the text is still 
fuzzy.

Played with Sharpness and Antialising from preferences but still looks 
bad.

even tried the terminal commands for smoother / stronger antialising.

Any suggestions ll really help...

Big thanks to all, and specially to Andreas. Cheers.

Is this reversible?

If so, how?

Thank you Andreas, great work!

I've tried these instructions several times now for my Dell U2711 
monitor and no luck. I've got a brand new Mac Pro with 10.9.2. When I 
open up the display settings it says at the top "Display with forced RGB 
mode (EDID override)" but I still don't get the option for 2560x1440 
resolution and the screen looks no different in any way than before. Is 
there something I might be missing?

Hello there,

I just got a new retina macbook pro 15 inch (mavericks 10.9.2) and I 
want to connect it with mdp to dp to my Dell U2312hm monitor. Before 
applying the patch, my monitor would output colors in YCBcR. It now says 
RGB but the text is really ugly.

When I use my wife's 2012 macbook air (mavericks 10.9.2) and connect it 
via the same cable, the monitor sees it as RGB and text is sharp.

Is there a solution to this?

Thank you.

Thanks!
I just got a new Mac Pro (1) and two Asus PA279Q monitors and was very 
disappointed by what I saw: it looked as if I hooked up a pair of VGA 
monitors via slightly too long cables. Not what I expected.

Luckily, I found your ruby script before returning any of the equipment.

Thanks again, the script solved it and I'm very greatful!

Thanks for this post. I've just bought myself a Philips 272C4QPJKAB 27" 
2560x1440 screen.

I spent most part of yesterday evening trying to do different setups on 
the monitor itself as well as colour profiles on the Mac (2011 MBP 15") 
all to no avail. I was sure I had to return the screen, but just to be 
sure today I brought home an HP Elitebook from work to try with. And 
darn, perfect image. So back to the drawing board and that's when I 
found this thread.

Thank you a thousand times Andreas, you've saved me a lot of pain :)


Attached is the script output for the Philips 272C4QPJKAB.

Tried the script under Mavericks to force RGB to my TV. It works, but I 
lose a couple of resolutions and the ability to change the refresh rate. 
Any idea why that might be?

Thank you!

I just received a Dell U2913WM and had the same issue and fixed it with 
your nice tool/procedure and I saw that file generation is different if 
I was in display port or HDMI but the same folder name. I planned to 
have 2 DELL U2913WM but now I'm worried if it will work as I can only 
use one type of generated file. Any advice ?

Using 2014 Mac Pro Retina 15" with Dell U3011 hooked up via mini display 
port to display port.

It gave me an option to run 2560 x 1600 no problem.   HOWEVER, the 
display was/is a bit blurry(but still readable).   Running this script 
fixed the color issue, but not the blurriness.

Under VMware/windows 7, the monitor looks sharp and no blurriness. 
What I did notice was that the resolution was 2560 x 1578 in windows for 
some reason.  When I changed it to 2560 x 1600, it became blurry exactly 
like under Mac.  I think that's a clue.

Can someone try using 2560 x 1578 using switchResX??   There's something 
funny going on, i think.

Hello,

Thanks for the great weblog.
Can you please create a patch for Dell U2913WM as it's new and i'm sure 
so many people need that file.

Cheers,
Fred

Hi guys,

First i wanna thanks to Author: Andreas Schwarz

I used the script and it works perfectly on my Mac pro on Dell U2913WM

Open the finder and press Control+Shift+G and paste this path

/System/Library/Displays/Overrides

All you need is to paste the unzipped folder here and reboot your Mac

after you Mac restart change your sharpness to 50 and you are all set!

P.S. The the file i created is for Dell U2913WM on OS X

Hi Fred,

Just for your information, the file generated and the settings are 
specific to the output port type. I tried with the same screen the mini 
Display port and the HDMI, the files generated are different (but same 
folder name) and if you with the incorrect file it doesn't fix the blur 
issue.

That was the purpose of my reply as I wanted to use two U2913M connected 
to s thunderbolt dock station, one in DP and one in HDMI and I'm not 
sure I can have a way to specified which file to use compare to the 
output port.

Hi Snoop,

you are right! I forgot to mention i used Mini DisplayPort DP to 
DisplayPort 1.2 Cable Male to Male (the one comes with the monitor.

cheers,
Fred

Hi David K.

I created a basic video on youtube for you so you can try!

P.S i'm using Mini DisplayPort DP to DisplayPort 1.2 Cable Male to Male 
(the one comes with the monitor)

here is the link;

http://www.youtube.com/watch?v=EUM7s9LY3GM&feature=youtu.be

Cheers,
Fred

Is there anyway to do this EDID override while not limiting display to 
60hz?

I want to keep the ability to chose 24hz refresh while forcing RGB. But 
this scripts also forces 60hz.

Can someone please help? Thank you.

Same Issue with Apple rMBP + Maverick + DELL UP3214Q over miniDP 
@3840x2160 => YPbPr instead of RGB.

Solution works! After using the script, Input Color Format changed to 
RGB. Many Thanks!

Hi Everyone,

I have philips brilliance 298x4qjab, which has 2560 x 1080 resolution. 
Is there a file for this monitor?

Also, I don't see display/override folder.. any idea why?

Thanks,
Justin

Help!!!

I have a MacPro (2014) with a Dell U3014.  Text is blurred.  I read 
about the Ruby script but I can't find the download.  It also says to 
put it in my home directory.  Where is that.

So frustrated!

JohnR wrote:
> Using 2014 Mac Pro Retina 15" with Dell U3011 hooked up via mini
> display
> port to display port.
>
> It gave me an option to run 2560 x 1600 no problem.   HOWEVER, the
> display was/is a bit blurry(but still readable).   Running this script
> fixed the color issue, but not the blurriness.
>
> Under VMware/windows 7, the monitor looks sharp and no blurriness.
> What I did notice was that the resolution was 2560 x 1578 in windows for
> some reason.  When I changed it to 2560 x 1600, it became blurry exactly
> like under Mac.  I think that's a clue.
>
> Can someone try using 2560 x 1578 using switchResX??   There's something
> funny going on, i think.

I have the same issue running a late 2013 macbook pro on a dell U2713H. 
I can't check the windows comparison but the screen definitely doesn't 
look as clear as it should... any ideas?

HI everyone! thanks for all the help. i'm writting from Argentina so my 
english is not the best ! I have the same problem with the blurry text 
using my mini mac with mac os x 10,9 an a samsung monitor  SMT24A550 . 
I've tried the generic solution and it seems to improve the quality but! 
only with the explorer chrome. The rest of the texts seems unfocus in 
some parts, pictures loog great so I'dont think is a rgb problem but 
more a font problem or somethinhg like that.

any idea?

thanks!!
ile

So I have 2 external Dell U2713HM hooked up to a MBP retina. Each 
monitor is connected with a mini-DVI (Thunderbolt) to Display Port (on 
monitor).

For about a year, I've been running 2560 x 1440 on both monitors. No 
problems at all. Simply plug and play. I could select 2560 x 1440 on 
both monitors using System Prefs > Displays > Scaling Option was there 
for the native resolution.

All of sudden one day, I was fiddling around and plugged in my machine 
into the two monitors. For whatever reason, they were both running at 
some lower resolution dubbed (1080p) in my System Prefs > Displays area.

I could not set either one back to 2560 resolution. Finally after 
holding option while clicking scaling (rather than "Best for Display"), 
I could get the 2560 to show in the menu for one of the monitors. The 
other could not be switched using the same method.

Detect displays would not work either. That's how I initially got 
everything to work without this fix. After fiddling around and getting 
frustrated that both monitors once worked and now they wouldn't, I 
finally found this site.

I extracted the file provided by Andreas since I have the U2713HM. 
Rebooted the machine. Problem solved.

I want to add a quick note. My initial problem had nothing to do with 
the RGB color or sharpness or any calibration issues (like many on 
here). I simply could not change the resolution to native 2560 x 1440.

I'm not an expert on monitor color and calibration, but everything looks 
great. This fixed my resolution issue, and possibly made the color 
accuracy better (not really sure).

Thank you Andreas!

Alex Reeve wrote:
> Wow, you're a champion for doing this. I've been sporadically
> trying to
> solve this for almost 2 years!
>
> I managed to work as far as I could by replicating what I imagined your
> steps are – I got everything else figured out except the <data></data>
> tag.
>
> My monitor is a Dell 2709W, and my ioreg -l is attached to this post as
> a .txt file. If you could take a look I'd really appreciate it – or let
> me know how you calculated the <data></data> tag contents so I can do it
> myself!
>
> Thanks again, really appreciated.

Hi,

I have the same monitor and was wondering if you got this working? I 
have not been able to nor can I run the universal ruby script for some 
reason. If you happen to have the Overrides file for the 2709W and could 
post it I would greatly appreciate it. Thanks.

Hello

I recently bought a Mac mini, and i havea dell U2713H. I tried to do 
what you all wrote but it doesn`t work, I still got that ghosting. Can 
anyone help me with this problem? All I want is to use the monitor at 
it`s highest resolution. Can somebody help me with a tutorial or 
something like this?
Thanks

Nice one, solved my problem with U2913WM using 
http://embdev.net/topic/284710#3027030

:)

++1

I managed to get the script to run for my 2709W but I am still not able 
to get the resolution past 1920x1200 on Mavericks. Am I missing 
something? In Windows (Parallels) it goes to 2560x1600 but looks blurry. 
Please help!

Here is what I get. Any help would be appreciated.

Thanks for the post. It didn't work for me :)
But still happy to see people putting effort in helping others.

I managed to solve my problem simply by using the mini DP To DP 
DisplayPort Cable that came with the DELL U2713H.

I have both the DELL U2713H and U2713HM. The HM did not have so much 
trouble with the contrast sharpness. But both monitors could not run on 
native resolution (2560). By using the thunderbolt cable it was all 
solved. And I also lowered sharpening from the monitor from 50 to 0.

I recently bought a mac pro and hooked both monitors on it.
Maybe this will help some of you guys too.
cheers

As this post isn't that recent anymore, I thought I'd share my results 
from a few seconds ago with my brand new Macs and Dell screen:

Plugged in my new Mac Retina 13 to a new Dell U2713H Rev 07, running 
latest Mavericks 10.9.2 via the mini display port to display port cable 
that came with screen...

Sadly, the text was a little fuzzy and pixelly. So the problem still 
hasn't been sorted by either Dell or Apple.

Then after a quick google, I extracted and ran your script. Popped it in 
the file location you said. Rebooted, and hey presto, you fixed it. I 
sorted this within just a few minutes of googling. Now I have a screen 
to die for. You're a superstar! Thank you. Thank you.

Hi Andreas,

Per accident I stumbled on your post. I have an issue with very tiny 
white lines which appear in the browser (see attachment). While resizing 
the browser window they dissapear. I wondered if your script would fix 
this.

I'm using MBP / Maverics with Dell U2713HM connected with Mini 
DisplayPort to Dual-Link DVI Adapter.

My monitor performs well except for the tiny white lines I was speaking 
about.

If I'd like to try your script what kind of connection(cable) do I have 
to use? The one I'm using now? (Mini DisplayPort to Dual-Link DVI 
Adapter)

Will your solution get me the max resolution?

Thanks for now

Mark

Hi Andreas,

I have bought a Dell 21.5" E2214H LED-LCD monitor and have the same 
problem with blurry screen when connect it to a Macbook Pro 13". I ran 
the script above but still the problem persists.

I dont know the problem is my cable: I am using miniport to VGA adaptor? 
should i get to DVI adaptor?

or should I modify something in the script, now that my monitor is 
different?

I would really appreciate your help,

Thanks,
Samin

Hello everybdy, i'm trying to run ruby patch-edid.rb  and i get this 
answer


/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0. 
0/universal-darwin13/rbconfig.rb:212:  warning: Insecure world writable 
dir /usr/local in PATH, mode 040777
patch-edid.rb:11:in `<main>': undefined method `[]' for nil:NilClass 
(NoMethodError)

Any help on this issue?

Thanks in advance

I have a MBP retina running 10.9.2

If you've not had any success yet, try this file. I have the exact same 
setup (15" Retina MacBook Pro + VP2770) and this file we created fixed 
the issue. No font display problems that I can see either.

Henry thank you for your answer
Actually I have another monitor, an AOC e2043Fk, connected via VGA 
adapter.
I tried to run the program Andreas gave and got the error posted 
earlier.
I don't know if it is about permissions or other "human" errors
If you may give me some help I will appreciate...

Thanks again

Hi Christian,

Sorry I was replying to an earlier post about the same monitor I am 
using (the ViewSonic 2770). And also this may only fix the MiniDisplay 
Port issue with RGB, I'm not sure about a VGA connection but worth 
trying.

The same process should work for you (VGA difference aside) using the 
file I'm attaching now (patch-edid.rb).


1. Put the 'patch-edid.rb' file in your home location, e.g: Macintosh 
HD; Users; "your name";
(your name being whatever you've named your Mac)

2. go to Terminal and enter: ruby patch-edid.rb
press enter

3. You should see a new folder appear in the same location called 
'DisplayVendorID-5a63'

4. Copy this folder into: Macintosh HD; System; Library; Displays; 
Overrides

- There'll probably be a folder there already with the same name (best 
to copy it somewhere just in case you need it)

5. restart your Mac and hopefully that's it.


Sorry if this is repeating some of what's been said above but thought 
I'd say exactly what I did. You have to make your own file using 
Terminal as it's unique to your monitor otherwise I'd make one for you.

Good luck!

Hi Henry, Thanks any way

I did what you told but i get this error:

/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0. 
0/universal-darwin13/rbconfig.rb:213:  warning: Insecure world writable 
dir /usr/local in PATH, mode 040777
patch-edid.rb:11:in `<main>': undefined method `[]' for nil:NilClass 
(NoMethodError)

Don't know why!!!

Any idea?

Thanks

Hi Christian,

To be honest I don't know, really sorry. Just make sure you have 
administrator rights to the Mac as it could be that possibly.

Otherwise make sure your MBP screen is closed and only the monitor is 
running when you try it.

Sorry I can't help.

Hi Henry
Thanks anyway

Looks like this was fixed in 10.9.3 that was just released. I just 
removed your workaround and everything is still fine (RGB) on my U2713H.

Hi Björn, sadly it didn't work to me.
I have a MBP 13 retina early 2013.
Thank anyway

me neither! display samsung 32 inch FHD, using the script fixed the 
peoblem but now after i updated to 10.9.3 the screen is pink again!

Check this people!
worked for me and no more scripts :)

http://wiki.samygo.tv/index.php5/Calibration

Hope it works for you. Sure will.

Hi Andreas

I have the same issue with picture quality when connecting my Viewsonic 
VP2772 display to my 13" MacBook Pro Retina (late 2013), either using a 
good quality mini-DisplayPort to DisplayPort cable or a good quality 
HDMI cable.

The display has a native resolution of 2560x1440 which is the resolution 
I intend it to use.  The MacBook has dual-core (with HT) Core i7 
processor, with Iris 4000 graphics which is apparently capable of 
running up to 3x 2560x1600 pixel displays (albeit with a likely 
reduction in refresh rate, at least on HDMI and of course including the 
laptop's own built in Retina display).

The Viewsonic is capable of running in 10-bit Adobe RGB mode, which I 
would like to if possible - particularly as the laptop appears to 
support this icc profile out of the box.  Running the screen from a 
separate Windows 7 machine it looks exactly as I would expect.  Running 
it from the Mac yeilds far less impressive results.

Will the same script you've included in your post work for me, or do I 
get the impression from some of the comments posted below that this 
script needs to be specific to the hardware and/or colour profiles of 
choice please?

This has been annoying the heck out of me since I got the Mac - my 
first, so I'm still at N00B stage!

Thanks
maustin

Hello,

I am getting this error when running the script :

patch-edid.rb:11: undefined method `[]' for nil:NilClass (NoMethodError)

Any chance you can tell me what to do ?

Thanks again for all.

Hello,I recently bought a new monitor(Dell U2414H) that i connected to 
my Macbook Pro Retina Late 2013(OS X Mavericks 10.9.3) via mDP to 
DP.Everything is blurry on my screen.I tried the ruby script,after that 
the monitor is not recognized as TV,no more NTSC refresh rate but still 
got blurry screen.Any ideas how to fix this?

Thanks.

It's ok if i used a virtual keyboard until lid was closed in Terminal 
process?

This works to fix the monitor for me - I just got a Dell U3014, which I 
am running on a new Mac Pro.  The issue I have is once I load the fix - 
the monitor won't wake once it goes into sleep mode.  I've toggled back 
and forth between the original "DisplayVendorID-10ac" directory (which 
has a DisplayProductID-4093 file along with a DisplayProductID-409c 
file) and the Directory that the script creates which is the same 
directory name but only one file "DisplayProductID-4083"  Is anyone else 
having the problem with the screen getting stuck in sleep mode? 
Sometimes I can wake it by toggling it on and off - but not always. I 
tried using the mini-DVI port (i.e., using a thunderbolt port on the mac 
pro) and have the same issue.

Correction - it will wake with the mini display to display cable 
attached.  Just will not wake with the HDMI port attached.

I'm terribly sorry, but i am somewhat confused by the steps to fix the 
colors/contrast on my new ASUS PA2790Q monitor. I have my late 2012 iMac 
(running 10.9.3) connected to my external monitor with the Mini-Display 
port to Display port (on ASUS).

I am using the following directions:

How to force RGB in Mac OS X
1. Download the patch-edid.rb script from the forums thread above and 
put it in your home directory.
2. Connect only the external monitor(s) in question (I closed my MacBook 
lid, for example). The script will make override files for any connected 
monitor.
3. Type “ruby patch-edid.rb” in Terminal.
4. A new folder will be created in your home directory. Move it into the 
“/System/Library/Displays/Overrides” folder. If Finder tells you that 
you are overwriting an existing folder, consider backing it up first.
Restart your computer, enjoy your monitor.


My problem is when i download the patch-edid.rb it isn't a file but a 
webpage full of text/code. And where exactly is the home directory? Do I 
save the text as a word document or text document and put it in - 
Macintosh HD -> Users -> (my user name)?

Additionally, since i'm using an iMac instead of a macbook I can't 
"close the lid of my computer." how do i make my iMac screen not 
repsonsive?

Sorry to bother, but this is driving me crazy. Any help would be greatly 
appreciated. I would be happy to exchange photo services 
(retouching/photoshop etc) if someone could walk me through the steps, 
possibly include screen grabs to help me grasp this.

-Tim

Andreas,

  I am an owner of a new 2013 Mac Pro and have it hooked up to my 
LG27EA83 27 inch 2560x1440 native mode monitor.  However, OSX 10.9.4 
appears to treat my monitor as a TV instead.  The only scaled options in 
the Display Tab are 1080p, 1080i, 720p, 1600x900 and 960x540 (HIDPI).

  I used this same monitor with a mini-display port to display port 
cable with my 2013 Mac Mini in native 2560x1440 with a problem.

  This morning I tried the path and it installed.  The results were 
large scale ghosting and distortion.  Fortunately I was able to copy the 
old folder back over the new folder to recover.

  Sent in an Apple bug report.

  Are there any adjustments that could be made to the script to support 
the LG 27RA83?

Thanks,

Pat

Do you know if this script could be modified to work with ASUS PA279Q 
27-Inch Screen LCD Monitor and MacBook Pro Retina?

Hi all,

I see that some people are reacting about ghost lines and images. But 
everytime someone brings it up. No reaction has been given whatsoever.

I find this topic very helpfull. I copied the folder from the first 
thread into my override folder. And I can see that my Dell  U2713MH is 
getting an RGB signal. But still I have that ghosting on my screen.

I have an MBP pro 13" 2013, connect the screen with a mini displayport 
to display port. I tried also with the adapter from apple and then 
connecting to DVI no result.

Can someone please advice?

Greetz
Sergio

Hi guys!

Very grateful for your work on these overrides!

My contribution: In OS X 10.10 Public Beta 2 on a 2012 Retina Macbook 
Pro, I had issues with my Dell U2713H connected via HDMI. The OS would 
tell the screen to switch from RGB instead of forcing it.

By disabling HDMI 1.3a, using SwitchResX Shareware (then I removed it), 
the computer seemingly could no longer force my screen away from RGB, 
and settled with the override (everything worked as expected).

This was not an issue for my other screen, connected via DisplayPort.

So if you face issues on 10.10, try it! Took me a while to figure out... 
:)

Hi, I"m running mavericks 10.9.4 on iMac 24' earl 2008 model, recently 
got dell u2713H as external monitor for editing my photos in lightroom 
but found they are slightly over saturated on it , tried everything to 
get the dell to match my iMac but no luck, even got them both 
calibrated, but same.
I installed overide file correctly but doesn't seem to make any 
difference what so ever, would really appreciate any help or advice on 
Dell settings and how to remove the over ride folder so I am bad to 
where I was. tried time machine but over ride still showing in display 
prefs,many thanks Jon

Has anyone been able to get this to work with a 4K Samsung hu6900? After 
I store the generated file and restart, my Retina Macbook Pro views the 
monitor as having only a very low resolution.

How do I go about uninstalling the override please? as hasn't made any 
difference to my setup.
many thanks
Jon

Hi Andreas,

Thank you for your file. Unfortunately it didn't work for me.

I have a MacPro (new model) with Thunderbolt to HDMI and a Dell 2711. 
This setup worked with 10.9 Mavericks. I had to press "Alt" while 
pressing "scaled" in preferences in order to get 2556x1440 as an option. 
As soon as I upgraded to 10.10 (currently on 10.10.3 beta) the 
resolution went away and the highest I can reach is 1920x1080.

I downloaded all 3 scrips, even the alternative. I put the Ruby file in 
my home folder, run the script, create the new folder with the new text 
file with I name DisplayProductID-a055, restart my computer and nothing. 
I still only see 1920x1080 as my highest resolution possible.

What can I be doing wrong?

Please please help!

Thank,

Conrad

hi..i have a problem.. i connect the dell u2410 at my macbook pro.. and 
i see that the input color is YPbPr but i want to change in RGB. When i 
change in RGB my monitor change color in a strange green. I read about 
force rob in my dell but I could not jet.
Can you help me?
thanks

Hi Andreas,
I fixed the problem follwoing with instructions some time ago. I have 
just installed Yosemite and this solutions does not work with this OS X. 
Could you avise?

Thanks.

Bump!

Experiencing this same problem:

Dell U2713HM Monitor
1080p max resolution option
Displayport cable
Macbook Pro mid-2010
OS X 10.10 Yosemite


Any ideas?

MBP Retina 15" Late 2013
Intel Iris Pro 1536 MB
Dell U2713HM Monitor

MDP - Displayport cable
OS X 10.10 Yosemite

2560x1440: OK (without script)
RGB: OK (without script)

However, it's still Television (even after script) and text has some 
halo effect (but not when zoomed in with double-two finger tap in PDFs 
or Safari). Some ghosting when scrolling through text is apparent too.

Is there a fix for Yosemite?

This directory /System/Library/Displays/Overrides does not exist on my 
Macbook Pro running Yosemite.  Is it named something else on Yosemite?

TheLuggage wrote:
> Hi,
>
> Andreas - you are a genius. Many thanks.
>
> Your script worked fine for my HP LP2475w - I've been searching for a
> fix for ages.

I have the same monitor hooked up to a Mac Mini 2012 via HDMI. I ran the 
ruby script from Terminal

ruby patch-edid.rb

and then I rebooted but nothing changed. Do I need to do something else?

I am new to this, so any help is appreciated.

Andreas Schwarz wrote:
> "ruby
> patch-edid.rb"

Ok. I found the problem. Here is a concise step-by-step set of 
instructions for those who like me struggled to follow the directions as 
presented in the OP.


Download the file “patch-edid.rb”
Copy the file “patch-edid.rb”  and move/paste it in the Home folder
*Find the Home folder by opening Finder - select Go - Home

Open Terminal (Finder - Go - Utilities - double click Terminal)
Type "ruby patch-edid.rb" (without the quote marks)
This will create a file in your Home folder

Move this folder to the following location:
System - Library - Displays - Overrides
*To see your System folder, from Finder select Go - Home

Restart your Mac

If your text is still blurry, turn off your monitor and then turn it on 
again.

This last step solved the problem for me.

Running an HP LP2475w at 1920x1200 over HDMI to a Mac Mini 2012.

I hope this helps someone.

Thanks to all who contributed before me.

MBP 13" Retina late 2012
Yosemite 10.10
Intel HD Graphics 4000 1024 MB
PHILIPS 298P4 monitor
_______________________________

Hey guys,
i fix this issue with only 9$!

BUY THIS CABLE
http://www.amazon.com/Cable-Matters-DisplayPort-Thunderbolt-Compatible/dp/B00C7RIL3C/

Pedro.

This. Is. Absolutely. Brilliant.

I purchased my 2413 earlier tonight, and was ripping my hair out trying 
to figure out why it looked like complete dung. It's much better now 
thanks to the patch/override forcing RGB.

Many, many thanks.

Has anyone gotten Apple to acknowledge this issue?!

This patch-edid.rb script is great.

I recently purchased LG 34UM95 and have it connected to my 13" rMBP 
(2012 version).  I was going crazy with the jagged edges on the text on 
my new external monitor.

It looks much better after running the script as instructed and 
rebooting the computer.

Thank you guys!

Hello,

Just want to add my little experience with this "hack" on my MacBook Pro 
with retina display 2012 (first gen) and the Dell U2713H.

In the past, I used the script to enable the display with a 
(mini)DisplayPort cable when I was on Mavericks. It worked like a charm, 
nothing bad to report.

When I installed, from scratch, Yosemite, I saw that the display was 
already working fine, as if Apple already took care to support it from 
the OS itself.

Recently, I was curious to test it with the HDMI port on the MacBook Pro 
with retina display and another one I have on a Thunderbolt hub. When 
using this cable, the text was fuzzy. I used the script (computer's lid 
close), but was a bit confused as it created a folder that already 
existed in the /System/Library/Displays/Overrides folder.

I investigated a bit more, and realized that while the 
DisplayVendorID-10ac folder already existed in the overwrite folder, the 
file created for the display connected with HDMI by the script was not 
in that folder. So instead of overwriting the folder, I simply copy the 
new file (DisplayProductID-a091) in the existing folder, and all begun 
to be displayed correctly after a reboot.

It is like magic!

Hi  Andreas,

I looked at the ruby script to try and change it so that it forces BGR 
instead of RGB, but I don't really understand what's going on in there. 
Could you possibly assist with that if it's not too much trouble?

Thx
Nevar

Thank you Andreas, this worked perfectly for my MBP 15" and Dell U2713

Hi

Thanks a lot, it worked for my HP 2509m monitor as well.

I remember fixing this issue earlier with Mavericks, but it restarted 
after I upgraded to Yosemite.

Thankfully, I recalled that I had to fix this issue some time back.

There is a way to revert this modify?

Because I bought another Monitor and now RGB is crashing my display.

Hi!

I successfully used this method with a LG 29MA73D (connected with 
miniDP-DP cable).

Now I have a DELL P2314H (same miniDP-DP cable) but this time I'm not 
able to override EDID correctly. The Ruby script generates the attached 
file. I can find the new profile in Display Settings (after reboot) but 
selecting it colors don't change.

Am i missing something? Maybe i need an additional step with this model?

Alessandro wrote:
> Hi!
>
> I successfully used this method with a LG 29MA73D (connected with
> miniDP-DP cable).
>
> Now I have a DELL P2314H (same miniDP-DP cable) but this time I'm not
> able to override EDID correctly. The Ruby script generates the attached
> file. I can find the new profile in Display Settings (after reboot) but
> selecting it colors don't change.
>
> Am i missing something? Maybe i need an additional step with this model?

Sorry for missing info, I'm on a macbook air mid 2013 with Yosemite.

Dear Andreas,


I just read about your good knowledge about connecting a Dell Monitor 
tot a Mac/Macbook.

I Have a Macbook Pro from december 2008. Old, but still in very good 
working condition. One of the first uni-body's Although this one still 
has a changeable battery.

I just purchased a Dell U2414H monitor and it connects well through mini 
DP - DP. The computer recognizes it as 1080P. So far so good

The only thing is that I miss a part of the display. In normal mode I 
have a black line of about 6cm on both sides and a line of about 3cm on 
top and bottom. In 'Overscan" the image seems to get a little bit less 
crisp and I still have black lines of about 3 cm on the sides.


Do you have a solution to solve this problem?

Many thanks in advance!

Kind regards

This fix works perfectly, I was ready to throw my 2012 quad core MacMini 
away! So thank you so very very much.
AB

Thank you for your program! I was running a brand new mac mini connected 
to an hp 21.5 1080p screen, and the mini was detecting the display as a 
television. I had no idea this was the problem, and was causing overscan 
and scaling. Now that it's back to "normal" I enjoy using the mac again! 
It's now a pleasure to use and I will refer anyone I know with "blurry 
Yosemite" to your page.

Thanks a shit ton!

- Alan

P.S. This site corrects the system font back to Lucida Grande, replacing 
Helvetica Nue. It makes things much more legible. Just a tip for those 
who want to use Yosemite but don't like some of the interface changes.

https://github.com/schreiberstein/lucidagrandeyosemite

I've recently come across a fresh racing game for android, its name is 
Real Race: Asphalt Road Racing and it's almost like a racing sim with 
arcade mechanics.
On a scale of 1 to 10 I'd give it a strong 8. List of features is nearly 
overwhelming, so is its playability. Outrunning the leaderboards trully 
entangles you and you are right away pulled in. It really reminds me of 
Asphalt Overdrive. Overall it's a great, ambitious free app.
There are no chases with law enforcement, but perhaps it's good though 
as multiplayer asphalt gameplay gives great occasion to prove your cool 
underground drag racing skills.
It boasts  really cutting-edge Artificial Inteligence and I've played 
already 6 times in a row or so and it's still fun and engaging.
Racing around desert dunes and steppes, asphalt and highways, it is like 
Need for Speed Carbon or Most Wanted, and as a matter of fact the newest 
part, NFS: Rivals.
On-screen high speed gives an illusion of actually being there and 
hurrying with top drivers as seen in TV. Adrenaline spikes are not far 
and few.
It's kinda kewl to race and beat other racers on 6 or so tracks. App 
feels like race with GT cars like race or dodge viper.

Hi THERE,
I have a similar problem, but not exactly the same, I wonder if anybody 
can help. I have recently bought a HP Pavilion 23xi, and even if on my 
MACBookPro (2010, version 10.6.8) I can see it as a "Display" and space 
used is RGB, when connected the monitor says "check video cable" but it 
just goes into sleep mode.
I am using a miniDP to HDMI cable to connect the mac to the screen. I 
have tested this cable on my TV and it works fine (so I think the cable 
should be ok). I have checked that on the HP screen I am using as 
default HDMI input.

Why can't I use this cable with the HP screen?

I have also tried to run your script and use the new Displays folders 
into Profiles, but same results, the monitor will just not switch on.

Any idea of what I could do?
It's a shame, cause I bought this HP monitor to specifically use it with 
my mac.

Many thanks for any feedback
Cheers
Serena

Hi there,
I purchased the new Dell U2715H to plug on my late 2008 Aluminium 
Macbook (which has a Mini DisplayPort). Problem is that I can use it 
only in HDMI mode. When I try the MDP or the DisplayPort, the monitor 
says "Entering Power Save Mode". And the HDMI maximum output is 
2048x1152 (far from the 2560 x 1440 maximum output).

I tried the Ruby patch Andreas provided while plugged in HDMI. The 
DisplayProduct ID it generates doesn't change a thing concerning the MDP 
or DP connection and will lessen the resolution in HDMI to 1920 x 1080.

I tried also to disable DisplayPort 1.2 from the screen and the DDC/CI 
(I read on other forums that it may do the trick) but no luck. Objective 
is to get the full resolution the screen can provide.

Any help would be useful. I was about to purchase a new Macbook Air to 
have the full resolution but if I can make my old trusted Macbook work 
instead, it would be way better.

Thanks,
Dom

I'm seeing the same issue on Yosemite 10.10.3.

Blurry / slightly out of focus text despite OSX seeing the dell u2713h 
as a monitor and forcing RGB.

I have a 15 inch rMBP mid 2014.

Has anyone solved this issue on Yosemite?

This used to work for me, but doesn't work with Yosemite. I am hopeless. 
Did someone found a fix for Yosemite please?

Hey, did you get an answer to this, it is the exact same issue I am 
having.
-s

These guys seem to have been working on it.
I need the fix too but if someone could apply the patches they describe 
and make a downloadable file available we could all hopefully get over 
this issue.

https://gist.github.com/evadne/5761366#file-displayproductid-4080

Mac Mini 2010. Ive gotten the script activated, but it only works in 
1024x768. Higher resolutions still look like garbage.
Does anyone know, if I used the minidisplayport and ran an adapter cable 
from minidisplayport to the monitor's HDMI, would that work?

This worked PERFECTLY for my 2 Acer K272HUL monitors that I just hooked 
up to my mid-2014 MBP, one over displayport, the other over HDMI. Both 
display at 2560x1440, both had horrid, fuzzy, crap fonts before and now 
look absolutely stellar!

Hi guys, new your help.
Can't get my ViewSonic VP2765 working. Reboot doesn't help.
Connected via Thunderbolt & Display port adapter or DVI > HDMI - same 
picture.

Can you help? Rebooted few times - doesn't work still.
How can I detect from command line that external display still 
recognized as TV?

$ ioreg -l -w0 -d0 -r -c AppleDisplay
+-o AppleDisplay  <class AppleDisplay, id 0x100000784, registered, 
matched, active, busy 0 (1 ms), retain 8>
    {
      "IOClass" = "AppleDisplay"
      "CFBundleIdentifier" = "com.apple.iokit.IOGraphicsFamily"
      "IOProviderClass" = "IODisplayConnect"
      "DisplayProductID" = 40744
      "IODisplayEDID" = 
<00ffffffffffff005a63289f0101010112180104b53c22783eee95a3544c99260f5054b 
b8c00b300a940a9c095009040818081408100023a801871382d40582c450056502100001 
e000000ff0053484b3134313838303039390a000000fd00324b0f5211000a20202020202 
0000000fc005650323736352053455249455301e3020318b553900504030207060e0f1f1 
413121115161d1e01023a801871382d40582c450056502100001e011d8018711c1620582 
c250056502100009e011d007251d01e206e28550056502100001e8c0ad08a20e02d10103 
e96005650210000180000000000000000000000000000000000000000000000000000000 
000000075>
      "IODisplayPrefsKey" = 
"IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/IGPU@2/AppleInte 
lFramebuffer@1/display0/AppleDisplay-5a63-9f28"
      "IOPowerManagement" = 
{"CapabilityFlags"=49152,"MaxPowerState"=3,"CurrentPowerState"=3}
      "IOProbeScore" = 2000
      "IODisplayParameters" = 
{"bgsc"={"min"=0,"max"=65536,"value"=65536},"rgsc"={"min"=0,"max"=65536, 
"value"=65536},"cmod"={"min"=0,"max"=4096,"value"=1},"ggsc"={"min"=0,"ma 
x"=65536,"value"=65536},"cyuv"={"min"=0,"max"=268435456,"value"=26843545 
6},"vblm"={"min"=0,"max"=196608,"value"=65536},"gsc 
"={"min"=0,"max"=65536,"value"=65536},"colr"={"min"=0,"max"=184467440737 
09551615,"value"=257}}
      "IOMatchCategory" = "IODefaultMatchCategory"
      "IODisplayAttributes" = 
{"IODisplayAttributes"=<676174760000000073676c6600000000726c6f6301000000 
63706220040000006364670080808000676c666400000000>}
      "IODisplayConnectFlags" = <00000000>
      "DisplayVendorID" = 23139
      "DisplaySerialNumber" = 0
    }



$ ruby patch-edid.rb
patch-edid.rb:9: warning: Insecure world writable dir /usr/local/bin in 
PATH, mode 040777
found display: vendorid 23139, productid 40744, EDID:
00ffffffffffff005a63289f0101010112180104b53c22783eee95a3544c99260f5054bb 
8c00b300a940a9c095009040818081408100023a801871382d40582c450056502100001e 
000000ff0053484b3134313838303039390a000000fd00324b0f5211000a202020202020 
000000fc005650323736352053455249455301e3020318b553900504030207060e0f1f14 
13121115161d1e01023a801871382d40582c450056502100001e011d8018711c1620582c 
250056502100009e011d007251d01e206e28550056502100001e8c0ad08a20e02d10103e 
960056502100001800000000000000000000000000000000000000000000000000000000 
00000075
Setting color support to RGB 4:4:4 only
Number of extension blocks: 1
removing extension block

Recalculated checksum: 0xfc
new EDID:
00FFFFFFFFFFFF005A63289F0101010112180104B53C227826EE95A3544C99260F5054BB 
8C00B300A940A9C095009040818081408100023A801871382D40582C450056502100001E 
000000FF0053484B3134313838303039390A000000FD00324B0F5211000A202020202020 
000000FC005650323736352053455249455300FC


$ cat DisplayVendorID-5a63/DisplayProductID-9f28
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" 
"http://www.apple.com/DTDs/PropertyList-1.0.dtd">;
<plist version="1.0">
<dict>
  <key>DisplayProductName</key>
  <string>Display with forced RGB mode (EDID override)</string>
  <key>IODisplayEDID</key>
  <data>AP///////wBaYyifAQEBARIYAQS1PCJ4Ju6Vo1RMmSYPUFS7jACzAKlAqcCV
AJBAgYCBQIEAAjqAGHE4LUBYLEUAVlAhAAAeAAAA/wBTSEsxNDE4ODAwOTkK
AAAA/QAySw9SEQAKICAgICAgAAAA/ABWUDI3NjUgU0VSSUVTAPw=
</data>
  <key>DisplayVendorID</key>
  <integer>23139</integer>
  <key>DisplayProductID</key>
  <integer>40744</integer>
</dict>
</plist>

$ cat 
/System/Library/Displays/Overrides/DisplayVendorID-5a63/DisplayProductID 
-9f28
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" 
"http://www.apple.com/DTDs/PropertyList-1.0.dtd">;
<plist version="1.0">
<dict>
  <key>DisplayProductName</key>
  <string>Display with forced RGB mode (EDID override)</string>
  <key>IODisplayEDID</key>
  <data>AP///////wBaYyifAQEBARIYAQS1PCJ4Ju6Vo1RMmSYPUFS7jACzAKlAqcCV
AJBAgYCBQIEAAjqAGHE4LUBYLEUAVlAhAAAeAAAA/wBTSEsxNDE4ODAwOTkK
AAAA/QAySw9SEQAKICAgICAgAAAA/ABWUDI3NjUgU0VSSUVTAPw=
</data>
  <key>DisplayVendorID</key>
  <integer>23139</integer>
  <key>DisplayProductID</key>
  <integer>40744</integer>
</dict>
</plist>

Forgot to mention, I have Yosemite and MBP Retina 15"

It's Spring time 2015, and I just bought a Dell UltraSharp U2715H.

My setups is as simple as it gets, or so I thought, since it took me a 
whole 32-hour life draining block of time to figure out how to connect 
the monitor to my Mavericks (10.10.3) MBP through a miniDisplayPort (mDP 
- mDP) cable, and WITH the max. resolution 2560x1440.

While I noticed that the picture quality at 2560x1400 looks, like, 
ex-act-ly the same as the readily available resolution 1080p (or 1080i), 
the following rough troubleshooting protocol may help you through a 
similar or identical situation.

1. Prepare to connect everything

1.a. Every monitor related cable is unplugged, incl. power cable
1.a.i. My MBP cable -> monitor options appear to be limited to mDP -> 
HDMI and mDP -> mDP. Be vigilant that these cables may be one-way, and 
if you have to, you may need to buy several more cables (ThunderBolt 
cable will not help, FYI) before you save the one or two that actually 
get you connected, or by God's grace a 2560x1440 default res. 
connection.
1.a.ii. The included connection cables appear to be useless. They appear 
to be DP -> mDP and USB -> USB/SS (surround sound?) connectors. Your Mac 
prob won't have a DP out port, thanks Dell. Anyway, I got max res. w/o 
the USB cable.

2. Simply turn on your Mac, log onto profile

2.a. Open System preferences. nav to Displays. leave app running, open

3. Attach power cable, hook mDP -> mDP or mDP -> HDMI  cables up, not to 
mac, but only to, monitor. Do this properly, there are marking 
indicating which monitor ports are "in" and which are "out".

3.a. Power on monitor.

3.b. Select from dell monitor menu input that corresponds to your cable. 
It should say its going to power save mode or no input

4. Connect monitor mDP cable to Mac

4.a. System Preferences > Displays comes into play soon. Mac screen will 
flicker abruptly, and instantly

4.b. Disable mirroring checkbox in originalbuiltin screen Displays pane. 
System Preferences should have a new window appear above or around it. 
This window will have the monitors model name in its title. select the 
dimpled option "Scaled" to view the available resolutions. 2560x1440 may 
or may not yet be available, but it wouldnt matter if it was

4.c. You have to move this new System Pref Display window into the 
monitor's screen.

5. Close macbook lid.

6. select new max resolution from dell monitors sys pref disp pane

i will respond to any particular problems to the best of my ability

leviathan wrote:
> It's Spring time 2015, and I just bought a Dell UltraSharp U2715H.
>
> My setups is as simple as it gets, or so I thought, since it took me a
> whole 32-hour life draining block of time to figure out how to connect
> the monitor to my Yosemite (10.10.3) MBP through a miniDisplayPort (mDP
> - mDP) cable, and WITH the max. resolution 2560x1440.
>
> While I noticed that the picture quality at 2560x1400 looks, like,
> ex-act-ly the same as the readily available resolution 1080p (or 1080i),
> the following rough troubleshooting protocol may help you through a
> similar or identical situation.
>
> 1. Prepare to connect everything
>
> 1.a. Every monitor related cable is unplugged, incl. power cable
> 1.a.i. My MBP cable -> monitor options appear to be limited to mDP ->
> HDMI and mDP -> mDP. Be vigilant that these cables may be one-way, and
> if you have to, you may need to buy several more cables (ThunderBolt
> cable will not help, FYI) before you save the one or two that actually
> get you connected, or by God's grace a 2560x1440 default res.
> connection.
> 1.a.ii. The included connection cables appear to be useless. They appear
> to be DP -> mDP and USB -> USB/SS (surround sound?) connectors. Your Mac
> prob won't have a DP out port, thanks Dell. Anyway, I got max res. w/o
> the USB cable.
>
> 2. Simply turn on your Mac, log onto profile
>
> 2.a. Open System preferences. nav to Displays. leave app running, open
>
> 3. Attach power cable, hook mDP -> mDP or mDP -> HDMI  cables up, not to
> mac, but only to, monitor. Do this properly, there are marking
> indicating which monitor ports are "in" and which are "out".
>
> 3.a. Power on monitor.
>
> 3.b. Select from dell monitor menu input that corresponds to your cable.
> It should say its going to power save mode or no input
>
> 4. Connect monitor mDP cable to Mac
>
> 4.a. System Preferences > Displays comes into play soon. Mac screen will
> flicker abruptly, and instantly
>
> 4.b. Disable mirroring checkbox in originalbuiltin screen Displays pane.
> System Preferences should have a new window appear above or around it.
> This window will have the monitors model name in its title. select the
> dimpled option "Scaled" to view the available resolutions. 2560x1440 may
> or may not yet be available, but it wouldnt matter if it was
>
4.c. You have to move this new System Pref Display window into the 
non-Mac's
> monitor's screen.
>
> 5. Close macbook lid.
>
> 6. select new max resolution from dell monitors sys pref disp pane
>

I'm retroactively adding a list of required materials:
- USB or Bluetooth connected keyboard
- USB or Bluetooth connected mouse
- a Mac video or display cable that's getting you an image on the 
monitor, though in all likeliness that image will be at best a 1080p res 
image

Also, for what it's worth, before I took all these steps, I did 
successfully run the Ruby script, and I have my own instructions here, 
below and was able to replace the Override file

my dumbed down Terminal procedure

Right click the "patch-edie.rb" file. Select "Save Linked Files as…" and 
save to your home folder. my home folder was the one that contained the 
folders named Applications, Documents, etc.

Run application "Terminal.app". You may start in the home directory by 
default. confirm you're in the home directory by typing the characters 
into terminal, "ls" followed by enter. the same files Applications, 
Documents along with that file patch-edid.rb you should've downloaded to 
the folder.

Type "which ruby". Note the path provided. Change the directory to that 
path. Mine was /usr/bin. All I had to type to accomplish dir change was
"cd /usr/bin/" followed by enter

Type "ruby [tildecharacter]/patch-edid.rb" then return

You should not get any errors in the terminal. You will be able to use 
finder to see a file called DisplayVendorID-XXXX containing an 
extensionless DisplayProductID-XXXX file within your home directory if 
all went as planned.

Open a finder window. navigate to your HD folder or Macintosh HD. 
Navigate System > Library > Displays > Overrides. Move that entire 
DisplayVe… folder over to this override folder, drag, drop. replace if 
neccessary

Open Mac lid, Restart Mac.

Method not working on OS X 10.11 El Capitan any more because Apple 
doesn't ude /S/L/Displays anymore. It's simply empty... And adding the 
profile has no effect like it was the case in Yosemite.

On the latest beta3 of 10.11 override file is generated, but when 
loaded, external display stops working with MacBook (the new one with 
USB-C connector — I'm using Digital AV adapter to HDMI to connect 2913WM 
display)

on 10.11 beta 4 display works, but override doesn't

Hi,

Does anyone have a solution to this error:

/System/Library/Displays/Overrides/patch-edid.rb:9: undefined method
`[]' for nil:NilClass (NoMethodError)

The script worked on my 2011 macbook air, but not on the early 2015.

Thanks

My new rMBP 15" correctly shows the color space as RGB in the header 
description of the color profile for the Dell u2414h. Is this fixed by 
Apple in Yosemite?

Hi:
I just bought this Screen ACER K272 HULA  and i have the same issue. 
Connected DVI-DVI I have no issues but max. resolution is FHD, when i 
try to connect mDP - DP all i get is a No signal error... I have a Mac 
Pro mid 2010 with this wire

http://www.startech.com/Cables/Audio-Video/DisplayPort/6-ft-Mini-DisplayPort-to- 
DisplayPort-Adapter-Cable-Male-to-Male~MDP2DPMM6

I tried to force RGB but still with no luck and no signal income.
I also tried to change DP setting but i have not any DP setting in my 
menu, so I cant do it.

Please help.
What can i do?

Hello,

I just installed the new OS (El Capitan) and the patch for the monitor 
does not work. There is no "override" file in the displays folder. Any 
suggestions?

Thank you! :)

You can see this page.

How to force RGB in Mac OS X
http://www.ireckon.net/2013/03/force-rgb-mode-in-mac-os-x-to-fix-the-picture-quality-of-an-external-monitor

Brilliant! Thank you so much for this post. I would have returned my new 
Macbook Pro Retina 2015 to the store if I had not found this! Surely 
Apple can fix this problem by now?!

El Capitan instructions - 
http://www.ireckon.net/2013/03/force-rgb-mode-in-mac-os-x-to-fix-the-picture-quality-of-an-external-monitor

Hi, for anyone still having problems AFTER going through the whole 
process on ireckon.net: I came across a fix by user jkgeyti on github 
that worked perfectly for me:

“I just realised what the problem was for me. I hope this will be useful 
for others.
Opening the produced config file in nano showed the device name has a 
bunch of “unsupported” characters Philips 272P4^@^@^@�^@^WL^Oc^^^@ – 
forced RGB mode (EDID override). I replaced it with Philips 272P4 – 
forced RGB mode (EDID override), saved, unplugged and reseated the hdmi 
cable, and success!
Maybe it was worth adding a line to the script that strips all 
non-alphanumeric characters from the display name?”

Could somebody explain me where is my mistake?
When I override EDID (by script) I get 2 the same monitors with 
different resolutions (virtual), but there is only 1 monitor connected 
to PC in reality. Samsung U28D590D via DP

Hi guys,

I am wondering how to tell for sure if the monitor is displaying RGB or 
YCbCr... of course, the system preferences say RGB and so does the OSD 
on my Dell U2713HM.  (there is a manual toggle)

The colors are bland and yellowish and text does look processed, and 
when I do the native calibration, it shows a grey circle graphic with a 
split background. I can never get the grey circle to blend via adjusting 
contrast and brightness. So I don't trust the onboard calibration.

Also, does the expensive dual link dvi cable solve this issue without 
hacking el capitan? I don't want to partition my new hard drive, as I 
didn't buy the super duper big storage.

Thanks!!

Добрый вечер, форумчане. Дайте совет - может кто-то покупал шины, диски 
для авто в интернете?
Где лучше покупать?

Can you help me. I have a Macbook Pro Retina (Late 2012) with the Acer 
K272HUL. I did the procedure but the system still shows the 1920x1800 
resolution.

Dear Andreas,
Thank you for the script. I see it helped to many people. But 
unfortunately not for me. When I executed the script I got 3 the 
following errors:
mac-mini-s:~ sp$ ruby patch-edid.rb
patch-edid.rb:1: syntax error, unexpected $undefined, expecting '}'
{\rtf1\ansi\ansicpg1251\cocoartf1404\cocoasubrtf340
  ^
patch-edid.rb:2: syntax error, unexpected $undefined, expecting '}'
{\fonttbl\f0\fnil\fcharset0 Menlo-Regular;}
  ^
patch-edid.rb:2: syntax error, unexpected '}', expecting end-of-input
mac-mini-s:~ sp$

I'm using El Capitan on MatMini and trying to fix the issue for Samsung 
P2270HD.
Could you advise how to fix these errors?

Thank you in advance,
Sergey.

I have the following setup:

MBP 15" with Retina running El Capitan + Dell U2713HM

The Dell should be running at 2560 X 1440.
Instead it's only offering a top resolution of 1920 x 1080

I've tried two cables:
HDMI -> HDMI
DVI -> Mini DisplayPort

The colour space shows as RGB so I don't think I need to override the 
YCbCr problem others are having.

Will a DisplayPort -> Mini DisplayPort cable solve my problem?

Mel wrote:
> I have the following setup:
>
> MBP 15" with Retina running El Capitan + Dell U2713HM
>
> The Dell should be running at 2560 X 1440.
> Instead it's only offering a top resolution of 1920 x 1080
>
> I've tried two cables:
> HDMI -> HDMI
> DVI -> Mini DisplayPort
>
> The colour space shows as RGB so I don't think I need to override the
> YCbCr problem others are having.
>
> Will a DisplayPort -> Mini DisplayPort cable solve my problem?

Hello,

I have the same issue - have you found solution?

Thank you.

I applied the patch and did everything according to the instructions and 
tried every which way not by the instructions but I still can't fix the 
problem.

The text problem is fixed and its not blurry anymore but the image on 
the monitor is larger then the monitor. I can't see the menu bar on the 
top at all and can only see half of the dock at the bottom of the 
screen.

When I change the resolutions in preferences for that monitor to 
anything but the correct resolution the image goes to the edges of the 
screen but when ever I put it back to the full resolution it goes past 
the edges.

What in the world could be causing this and how could I fix this.

May I ask potentially a different question? I have an external GPU with 
HDMI 2.0 which works running YCBR 4:4:4 when in Bootcamp - and looks 
better than the RGB mode I'm getting on OS X, but I can't seem to force 
it to do so in OS X. How can I modify this script/EDID to force the only 
mode available to YCBR 4:4:4 (rather than RGB) as this is in fact a TV. 
Attached is what I currently get (no custom resolutions, only the HDMI 
pixel clock patch).

Hi,

is there any tuto to show us the way to increase the quality of our 
monitors ?
I'm not so confident with myself to do that but I really would like to 
change the setting of my second screen ...

Please

Hello!

I can't run this script on MacBook 12 with Dell U2713HM.

Could anyone help me?

I followed your instructions all the way to the display folder but there 
is no "override" folder.  I am running Mac OS Sierra version 10.12.3 
Can you assist?

Hey Andreas,

everything was fine until Sierra came in... Do you have an update for 
Sierra? El Capitan was still running...

Thanks again
Alex

Alex wrote:
> Hey Andreas,
>
> everything was fine until Sierra came in... Do you have an update for
> Sierra? El Capitan was still running...
>
> Thanks again
> Alex

Sorry - read the thread Top-Bottom, but thought the newest is on Top. 
Found the answer.. in Julians Post but I am a little nervous if I should 
go for that...

Has anyone seen there override(s) being ignored lately ?

I've been successfully using the override for an Acer K272HUL monitor 
for months.

After powering up my mac this morning the poor monitor display quality 
looks like it did before the override was applied.

I re-ran the ruby script thinking something may have changed but it 
produced the same output. I've validated that the acer display is using 
the override profile as well.

Any ideas ?

Thanks !

Figured it out... I can get good resolution on the external acer monitor 
if that's the only monitor I am using. Attempting to use both the 
MacBook pro display and the acer display results in poor resolution on 
the Acer. There's no joy in mudville.

Hi!

Used script and everyting ok with RGB,
but i can't choose top resolution 2500x1440 on my DELL 2515H
Maximum — 1920x1080(alreay use option+click on 'scale' menu)

Enyone have the solution?

Mac mini 2011, Sierra, HDMI-HDMI

Thanks!

Update to my previous request:

I'm fill so stupid... Used mini-display port -> Display port port cabel 
and everything automatically became good.

It's a solution for for Dell 2515H.

Many thanks for this awesome thread! It helped me through multiple macOS 
upgrades with a MacBook Pro and a Dell U2713H connected to it.

Unfortunately, I just upgraded the MacBook to High Sierra, and the 
Monitor goes crazy again.

What did change from Sierra -> High Sierra?
I rebooted the machine to 'csrutil disable'
To find out that the modified driver still is in 
/System/Library/Displays/Contents/Resources/Overrides
and after another recovery reboot to 'csrutil enable' the error remains.

Does anyone have an idea, how to fix this?

Matthias wrote:
> Many thanks for this awesome thread! It helped me through multiple
> macOS
> upgrades with a MacBook Pro and a Dell U2713H connected to it.
>
> Unfortunately, I just upgraded the MacBook to High Sierra, and the
> Monitor goes crazy again.
>
> What did change from Sierra -> High Sierra?
> I rebooted the machine to 'csrutil disable'
> To find out that the modified driver still is in
> /System/Library/Displays/Contents/Resources/Overrides
> and after another recovery reboot to 'csrutil enable' the error remains.
>
> Does anyone have an idea, how to fix this?

After some more time, the fix was to rebuild the driver with this 
recently updated script https://gist.github.com/adaugherity/7435890

Required steps:
Reboot mac, hold Command+r to enter recovery. Open Terminal and type 
'csrutil disable' to disable SIP. Reboot machine.

wget 
https://gist.githubusercontent.com/adaugherity/7435890/raw/66c54c17b179809b028b58a2ca7af0b9540d05b6/patch-edid.rb

chmod +x patch-edid.rb  --> this will create the new driver
cp -a DisplayVendorID-10ac 
/System/Library/Displays/Contents/Resources/Overrides

reboot machine into recovery again. Open Terminal and run 'csrutil 
enable'. Reboot the machine and the monitor should work fine.

hi all,

I have a Dell S2718D on my macbook air 2013, the maximum resolution is 
1920x1080
What I tried to do it:
Generated the file, I attached it.
made a copy of DisplayVendorID-10ac and overwrote it with the folder 
generated by the script, so the folder has 1 file in it
rebooted
the settings window has changed, so I can see different resolutions now, 
but the largest number is still full HD.
I noticed the script added new line characters to the data section, I 
removed it and tried again, with the same result.

Any idea what could I try?

thanks

PS, I have bootcamp, QHD works in windows properly

Matthias wrote:
> Matthias wrote:
>> Many thanks for this awesome thread! It helped me through multiple
>> macOS
>> upgrades with a MacBook Pro and a Dell U2713H connected to it.
>>
>> Unfortunately, I just upgraded the MacBook to High Sierra, and the
>> Monitor goes crazy again.
>>
>> What did change from Sierra -> High Sierra?
>> I rebooted the machine to 'csrutil disable'
>> To find out that the modified driver still is in
>> /System/Library/Displays/Contents/Resources/Overrides
>> and after another recovery reboot to 'csrutil enable' the error remains.
>>
>> Does anyone have an idea, how to fix this?
>
> After some more time, the fix was to rebuild the driver with this
> recently updated script https://gist.github.com/adaugherity/7435890
>
> Required steps:
> Reboot mac, hold Command+r to enter recovery. Open Terminal and type
> 'csrutil disable' to disable SIP. Reboot machine.
>
> wget
> https://gist.githubusercontent.com/adaugherity/743...
>
> chmod +x patch-edid.rb  --> this will create the new driver
> cp -a DisplayVendorID-10ac
> /System/Library/Displays/Contents/Resources/Overrides
>
> reboot machine into recovery again. Open Terminal and run 'csrutil
> enable'. Reboot the machine and the monitor should work fine.

Hey Matthias,

Even when I'm in the directory with "patch-edid.rb" running the command 
"chmod +x patch-edid.rb" seems to deliver no updated driver.

Are we meant to run the "ruby patch-edid.rb" line first and then copy it 
in and then run the "chmod +x patch-edid.rb" command?

Expand on that a little if you can cause I'm near tears with this 
utterly ridiculous bug that hasn't been address in over 6 years.

Hello everyone, i have a mac mini 2012 on high sierra and a Dell S2718d 
monitor which is connect via mini display port from the mac to the 
monitors hdmi.

Initially I was very disappointed from this monitor regarding all the 
good reviews i read as the picture was not very good. Resolution was 
maxing at 1980x1080, but it wasn’t just that, it was that something 
wasn’t right for my eyes as someone else has said here.
I tried switchres x which managed to bring resolution up to 2560x1440 at 
60hz but that didn’t help since i couldn’t  read anything. letters were 
very very small and my eyes hurt but even then it wasn't clear enough.
I then tried my old edid patch which seemed to work a bit but did no 
wonders as i expected, it just made things a little more clear. In my 
previous MacBook pro 2010 with an hp monitor this same old patch did 
wonders!

I started looking around and realised that my mac mini's graphics card 
is not very capable for the Hidpi trick as it doesn’t support it up to 
1980x1080 which would make things nicer, I tried it and it only works up 
to 1280x800.

Finally I ended up here and thank you barri as i downloaded your 
attachment
"DisplayProductID4139" renamed it and placed it in the folder, rebooted 
and in my great surprise it worked and made a great difference, the 
picture is vivid and crisp and very very clear, its like an iMac, the 
resolution now is up to 2048 x 1080 but thats not the difference, its 
that everything pops out…
Now i am starting to hope that i can get the maximum resolution of 2560 
x 1440 which both the mac mini and the Dell support.

anyone any ideas ? barri did you make it work past 1080p? did you find 
or try any new file maybe you could share with me?

thanks,

I have Macbook Pro w/ touch bar running High Sierra.  I have Dell 
D3218HN 32 inch monitor running maximum resolution at 1920 x 1080.  I 
did forced RGB mode which shows that it is updated correctly under 
Displays under About this Mac.  Fonts still look blurry.  Do I have to 
purchase different monitor to make it sharper to have same resolution 
2560 x 1600 on my MacBook Pro?  Thank you in advance!

Thank you! This worked for me!

Hi All im noob here. Good article! Thx! Love your stories!

Hi,

just want to add my 2 cents.

I have a Dell U2913WM. The image quality is horrible with most 
cable/connector combinations, but I finally managed with the help of the 
patch-edid.rb script. After running the script I copied the result like 
this:

1

sudo cp DisplayVendorID-10ac/DisplayProductID-408a /System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-10ac/

Then rebooted.

BUT - I only succeeded when running the image through a Dell WD15 Dock. 
So my setup is:

MBP --> USB3 cable --> WD15 --> HDMI cable --> U2913WM.

If I try with:

MBP --> the big ugly white dongle --> HDMI cable --> U2913WM,

I get the correct image to the screen for a split second at a time, 
followed by some flashing.

Tuomas

I got my file after running patch-edid.eb script, but can't copy this to 
overrides folder due to SIP, well the thing is that I don't want to turn 
off that protection. And I do have my reasons. Anyway – is there any 
option to change this without such deep override?

Thanks for the great fix!  I have an MBP 2016 with touch bar running OSX 
10.13.6 and just installed 2x Dell U2518D monitors on my desk.  Both 
monitors are connected via Display Port and had terrible shadowing, 
grainy fonts, etc. My Win10 VM (via Fusion) also had similar display 
issues.  I was just about to send the monitors back until I stumbled on 
this post.

I followed the instructions to generate and install the custom edid file 
then rebooted.  BAM!  The monitors look perfect!  I am still fine tuning 
the font smoothing via the control panel and "defaults -currentHost 
write -globalDomain AppleFontSmoothing -int" command, but so far, this 
is a huge improvement.

Many thanks to Andreas and everyone else for the great tip.  Very much 
appreciated!

-Ron

This doesn't work for an HP 1080p monitor running on 10.13.6. I get the 
display override but it doesn't solve the issue. Any suggestions?

Worked on my 2018 MBP running Mojave, using a dongle + HDMI into an 
U2518D.

Incredible! 6 years later, that little ruby script is still working like 
a charm :D

Избавит от грибка всего за 20 дней и не допустит повторного заражения, 
благодаря комплексу из натуральных масел и лекарственных растений.
Наш сайт: https://ljvgzmqd.morningeverning.com

For what it's worth, a lot of commenters seem to have problems with 
HiDPI displays being limited to 1920x1080. I had trouble getting my 
Samsung display show the full 2560x1440 resolution. Here's the output:

found display 'U28E570': vendorid 19501, productid 3439, EDID:
00ffffffffffff004c2d6f0d324e5030271c0104b53d23783a5fb1a2574fa2280f5054bf 
ef80714f810081c08180a9c0b300950001014dd000a0f0703e80302035005f592100001a 
000000fd00384b1e873c000a202020202020000000fc00553238453537300a2020202020 
000000ff004854504b3930303735320a2020014d02030ef041102309070783010000023a 
801871382d40582c45005f592100001e565e00a0a0a02950302035005f592100001a0000 
000000000000000000000000000000000000000000000000000000000000000000000000 
000000000000000000000000000000000000000000000000000000000000000000000000 
000000bf
Setting color support to RGB 4:4:4 only
Number of extension blocks: 1
removing extension block

Recalculated checksum: 0x66
new EDID:
00FFFFFFFFFFFF004C2D6F0D324E5030271C0104B53D2378225FB1A2574FA2280F5054BF 
EF80714F810081C08180A9C0B300950001014DD000A0F0703E80302035005F592100001A 
000000FD00384B1E873C000A202020202020000000FC00553238453537300A2020202020 
000000FF004854504B3930303735320A20200066

Note that the patch script truncates the new EDID to 128 bytes, instead 
of 256 bytes, so the extension block is lost. I managed to get the 
display running at full resolution by replacing the following portion of 
the code:

   bytes = bytes[0..127]
   bytes[126] = 0

   bytes[127] = (0x100-(bytes[0..126].reduce(:+) % 256)) % 256

... with:

   bytes[254]=0
   bytes[255] = (0x100-(bytes[0..254].reduce(:+) % 256)) % 256

Now, the new EDID is:

new EDID:
00FFFFFFFFFFFF004C2D6F0D324E5030271C0104B53D2378225FB1A2574FA2280F5054BF 
EF80714F810081C08180A9C0B300950001014DD000A0F0703E80302035005F592100001A 
000000FD00384B1E873C000A202020202020000000FC00553238453537300A2020202020 
000000FF004854504B3930303735320A2020014D02030EF041102309070783010000023A 
801871382D40582C45005F592100001E565E00A0A0A02950302035005F592100001A0000 
000000000000000000000000000000000000000000000000000000000000000000000000 
000000000000000000000000000000000000000000000000000000000000000000000000 
000000D7