I tried to connect the Macbook to the Dock, then plug the screen to the Dock...The UUID doesn't change that often but the full rang RGB fallbacks to YUV limited like after screen sleep. So there isn't any possible fix for this?

Every time the UUID change, the fix need to be applied.
Does the UUID change at all after screen sleep?
Inte doesn't change, but I run directly from HDMI.
As long as I connect the same device my UUID stays the same and the fix works.

I tried to connect the Macbook to the Dock, then plug the screen to the Dock...The UUID doesn't change that often but the full rang RGB fallbacks to YUV limited like after screen sleep. So there isn't any possible fix for this?

Every time the UUID change, the fix need to be applied. Does the UUID change at all after screen sleep? Inte doesn't change, but I run directly from HDMI. As long as I connect the same device my UUID stays the same and the fix works.

Mine is Macbook Pro (M1 Pro) and using Caldigit TS4
Screen is a 4K 144Hz set to 2560 x 1440 HiDPI 144Hz 10bit.
I connected to the dock using TB4 cable, then I tried DP to DP, DP to C, C to C, once connected the display is fine and is able to use full range RGB, but after sleep-wakeup cycle it ends up become YUV limited.

The weird thing is that the UUID did not change, but it turned into YUV limited anyways.

@aozaki-kuro the suggestion from @Amritus when the UUID changes is correct.

There is also a bug in macOS that loses the RGB color output after waking up from sleep on some configurations and ignores the plist files completely: https://gist.github.com/GetVladimir/c89a26df1806001543bef4c8d90cc2f8#alternative-terminal-commands-to-force-rgb-color-output-on-m1-and-m2-based-macs-and-workaround-for-losing-rgb-color-after-waking-up-from-sleep

The workaround is to either reboot (recommended) or to restart the service with the command in the link above (not recommended)

Hi there,

just want to note that the v3.x version of BetterDisplay has a menu to switch color mode (on the fly, Apple Silicon-only):

You can use Configuration Protection to force the color mode if it gets changed to something undesired:

The app also has full CLI access so you can script everything using betterdisplaycli:

Examples to get color modes:

betterdisplaycli get -namelike=lg -connectionMode
betterdisplaycli get -namelike=lg -preferredConnectionMode
betterdisplaycli get -namelike=lg -connectionModeList
betterdisplaycli get -namelike=lg -connectionModeListAll

Examples to set color mode:

betterdisplaycli set -namelike=lg -connectionMode=bpc:12+range:full+encoding:rgb+chroma:444+hdrmode:hdr10
betterdisplaycli set -namelike=lg -connectionMode=bpc:8
betterdisplaycli set -namelike=lg -connectionMode=hdrmode:dolby
betterdisplaycli set -namelike=lg -connectionMode=bpc:10+range:limited
betterdisplaycli set -namelike=lg -connectionMode=encoding:ycbcr+chroma:422
betterdisplaycli set -namelike=lg -connectionMode=2707781557398802176

Hi there,

just want to note that the v3.x version of BetterDisplay has a menu to switch color mode (on the fly, Apple Silicon-only):
...

@waydabber Oh thank you soooooooooo much for the information. I just tried it out and it worked like magic! The pro license finally worth the price.

Again, Apple, fix the damn problem since a third-party software already did 🙄

Edit: It's still not good when being used with a dock, the screen went back to YUV limited instead of RGB Full

@aozaki-kuro - If RGB is simply not available all in the color mode list, only YUV with chroma subsampling then that probably means simply there is no enough bandwidth for the mode. YUV with chroma subsampling requires less bandwidth. The app lists color modes that are at tenable/attainable based on the display's EDID and negotiated bandwidth.

@waydabber Welp I am 100% sure that the monitor should work within the bandwidth limit. When I plug it in or after a restart, the monitor runs in 2560x1440 HiDPI 120Hz 10bit (RGB full) without a problem. But after a sleep cycle, macOS refuse to recognize it as RGB full mode. The problem only appears when I connect through dock, no problem when I connect it with the Macbook Pro directly. I have checked that the UUID never changed.

Now I'm not sure whether this is a macOS / hardware bug or the monitor's problem.

@aozaki-kuro - oh ok, so the problem is that it reverts back to the old setting but the RGB is still available? If so, then you can use Configuration Protection menu in the app so the OS does not revert to some unwanted Color Mode (see the screenshot for this in the post above). Anyway, let's not hijack this thread, if there is any question regarding how to use the app, go to the discussions section here: https://github.com/waydabber/BetterDisplay/discussions. Let's leave this thread for the configuration file edit based approach which is a entirely valid and great solution.

I assume this is still an issue with Sequoia? I have only one Mac which is not upgraded yet, so I cannot test.

@tsanga13 I haven't checked with HDMI-to-HDMI cable, but can confirm that USB-C to DisplayPort cable seems to work on macOS 15.1 Sequoia

@tsanga13 I haven't checked with HDMI-to-HDMI cable, but can confirm that USB-C to DisplayPort cable seems to work on macOS 15.1 Sequoia

Thanks for the feedback

Does anybody have recommendations for USB-C to DP cable? Will cheap one work?

@rdreasn It's a passive conversion, so most USB-C to DisplayPort cables should work, as long as they are decently made and follow the standards.

The best cable is usually the one that you can get locally and possibly have a chance to try it out

Hi, I faced an issue. Last week I bought a 2K resolution monitor and tried to use it alongside my MacBook Air M1. The pink tint appeared. I tried two different USB-C to DisplayPort cables. For the first three hours of using the monitor with the laptop, the color was fine, but after that the issue appeared. macOS version 15.4.1 (24E263) Sequoia. Any idea?

I adjusted the white balance as a temporary solution to remove the purple tint.

@mahmoud-eslami tell me more about the connection between the MacBook and the Monitor.

Does it connect directly with the USB-C to DisplayPort port cable or there are other Docks, hubs or peripherals connected to the same port?

@mahmoud-eslami tell me more about the connection between the MacBook and the Monitor.

Does it connect directly with the USB-C to DisplayPort port cable or there are other Docks, hubs or peripherals connected to the same port?

The connection between the Mac and the monitor is via a DisplayPort USB-C cable directly, without any converter or hub.

Is it possible that there is an issue with the monitor? The Monitor Option menu color is normal, by the way...

@mahmoud-eslami thank you for the reply.

It is possible, but it would be best to try the monitor on a different device to be sure.

Also, if there any settings on the built-in monitor menu for high speed USB, try to turn that off

When I was messing around with the Better Display app to tweak the output settings, turns out I was already in RGB mode. Been stuck on this for three days now, totally clueless. Oh, by the way, I’m using a C-to-DP cable to hook it up. The screen’s a miniLED, 2560x1600, 240Hz.

@MuBai-He thank you for your comment.

If you already have USB-C to Display Port cable, it should usually work right away without any modifications.

Just make sure that you turn off HDR in order to have RGB Color Output.

If that doesn't work, try creating a new user temporarily to test out with a clean congratulation, without any apps or modified files

Same problem,I already create a new user.But I get the same problems

@MuBai-He when you turned off HDR, it seems to look good on the first image.

By the way, you probably know this, but on the screenshot it shows your name (or a name) from the account. If that is not on purpose, you might want to edit the image

It's weird,I lost my dsc and 10bit rgb set after update to macos15.4 , I use tb4 cable from m1pro macbookpro to dell 3224kb,T try any method to reopen dsc on my mac,but failed.Now it run on ycbcr 8bit

@Cherrymelon it's possible there was something with the update. Does it do the same on 15.6 also? Any settings on the monitor's built-in menu that could be changed regarding the dsc?

You could try turning off HDR, if that is an option

@Cherrymelon it's possible there was something with the update. Does it do the same on 15.6 also? Any settings on the monitor's built-in menu that could be changed regarding the dsc?更新可能有一些东西。它在 15.6 上也做同样的事情吗？显示器内置菜单上可以更改有关 dsc 的任何设置？

You could try turning off HDR, if that is an option如果可以选择的话，您可以尝试关闭 HDR

no,dsc can't set from monitor,the monitor just show info about bandwith and dsc whether enable.
I alway disable hdr option,maybe Apple intend to force me update laptop to m4 ,sad

plist buddy doesn't work anymore with tahoe 26.1 beta. "entry already exists on both Library/Preferences and /Library/Preferences/ByHost, and still YCBCR. monitor? LG OLED and Mac Mini M1.

Waiting for a fix.

thanks Vladimir.

EDIT: Solved by buying better display pro, custom editing OLED EDID (used https://www.analogway.com/products/aw-edid-editor) to force RGB and loaded custom edited EDID.

@490398290 Thank you for your comment and glad to hear that you've solved it.

I personally don't use Tahoe 26.

That being said, using an USB-C to DisplayPort cable usually helps

The problem is that on LG OLED TV i have only USB-A and HDMI, so that won't solve my problem.

@MuBai-He when you turned off HDR, it seems to look good on the first image.

By the way, you probably know this, but on the screenshot it shows your name (or a name) from the account. If that is not on purpose, you might want to edit the image

Oh, thank you, I checked the screenshot below, and I didn't see where the name was exposed, although it is not very important, but can I tell you conveniently?

I've wrapped this up into python script (thanks Claude).
And here is the comment on how to verify it works.

I hope this will save time to someone.
Another hope apple will make these options available in Display settings. 🙄

You're the goat FelikZ, thanks worked like a charm.