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Forum: Off Topic Dell U2713H on Mac: forcing RGB mode instead of YCbCr


von Camilo Umana Caro (Guest)


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Good afternooon,

I have a superb monitor but Imac only recognizes a terrible resolution.
Any information to improve this?

Thanks in advance.

Camilo

von Enver (Guest)


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Still haven't in 2020.

von Enver (Guest)


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What I meant to say is that I have this very problem with a Dell U3014
and a Mac Book Pro running Catalina 10.15.4 .
2 x HDMI over Thunderbolt3/USB_C --- both screens suck in YCbCr
 mode.

Interestingly, I had it with a U2410 too and could fix it with a 
firmware upgrade there.

Has anyone seen a FW upgrade for the 3014?

/Enver

von Marco P. (marpar)


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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

von roy (Guest)


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hey mate,

used this for my samsung monitor for my MacBook, but somehow that 
override file just never gets made, any ideas?

von mhschaap (Guest)


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Works perfectly, Thanks!!!! (Monitor LG 27UL850-W)

von Joe B. (exekutive)


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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.

: Edited by User
von Joe B. (exekutive)


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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.

von Joe B. (exekutive)


Attached files:

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USB-C to DisplayPort adapter works

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