Good morning @andreas
I have been using this procedure 
https://www.imaccanici.org/forum/viewtopic.php?t=30799 for years in 
order to add the resolution hidpi 1920x1080 on the LG 27 EA83-D using 
this file on my mac mini
Today I discovered your amazing script patch-edid.rb
How can I mix the two different files so that I can have both RGD and
hidpi relosution?

Thanks

Hey guys.

I've got a 2019 16" Macbook Pro and I'm try to connect my Dell 
Ultrasharp U2711 monitor (2560 x 1440 native resolution) with a USB-C to 
HDMI cable. (it's a good one 4K capable). When I hook it up the display 
looks very blurry. The maximum resolution available in System 
Preferences is 1920x1080, even under scaled, and even if I hold the 
option key. How do I make my Mac output a higher resolution?  Dell have 
said that the HDMI port is passive, and the monitor doesn't limit 
resolution in any way. So this seems to be an Apple problem.

Other people online have reported that it worked for them, with the same 
computer, same cable, and same monitor. No hacking. Just plug & play.

I was using this monitor without issue on my previous computer, a 
Macbook Pro from 2014. I was using a miniDP to DP adapter + the DP cable 
that came with the monitor.

I tried the ruby script mentioned in this topic, and it did change the 
color mode, but the display looks the same: fuzzy and only 1080p.

Why is it so damn hard to connect a computer and a monitor together??? 
So frustrating.

I gave up on trying to hack things. I just bought a USB-C to DisplayPort 
Adapter for 20 bucks and the monitor works perfectly at 2560x1440 RGB 
with digital sound.

And I don't have to worry about future OS updates breaking things.

USB-C to DisplayPort adapter works

I just bought a U2713H, connected it to my Macbook Pro (late 2011 with
Maverick), and experienced "grungy" text.

... Thank you all for your fantastic support!
Can somebody help me to copy the files into the "overrides"-folder? It 
does not work under BigSur, though I have admin rights.

The folder "DisplayVendorID-10ac" is on my Desktop. And I want to copy 
it to
"/System/Library/Displays/Contents/Resources/Overrides/"
What do I have to type in the terminal?

Regards, Markus

Markus R. wrote:
> ... Thank you all for your fantastic support!
> Can somebody help me to copy the files into the "overrides"-folder? It
> does not work under BigSur, though I have admin rights.
>
> The folder "DisplayVendorID-10ac" is on my Desktop. And I want to copy
> it to
> "/System/Library/Displays/Contents/Resources/Overrides/"
> What do I have to type in the terminal?
>
> Regards, Markus

For macOS 11 Big Sur and later, I recommend 
/Library/Displays/Contents/Resources/Overrides/ that works for me and 
doesn’t require disabled SIP. Maybe it works for 10.15 Catalina and 
before but I can’t confirm.