Experiencing the same issue with Pixel Format being locked with Gigabyte RX570 and Epson EH-TW6700 projector connected via HDMI.
With drivers 20.2.2 the Pixel Format is stuck with RGB 4:4:4 Pixel Format PC Standard (Full RGB) for the projector, so that is what I am using. But with newer drivers such as 20.4.2 the Pixel format is stuck with YCbCr 4:4:4 which produces washed colors with the projector. I am however able to change the Pixel format freely with my Dell U2715H display connected via DP with drivers 20.2.2 and 20.4.2.
Been reporting this issue to AMD support via the drivers "Report issues online" section a few times now. Hopefully the issue can be resolved in upcoming drivers.
AMD Ryzen 5 3600
Gigabyte GA-AX370-Gaming K3 (rev. 1.0), BIOS F50a
Corsair 16GB (2 x 8GB) Vengeance LPX, DDR4, 3200MHz
Windows 10 Pro (1909)
Dell U2715H connected via DP
Epson EH-TW6700 projector connected via HDMI
So i have found a solution take a picture of your screen with good RGB and with tne new drivers change the color screenmanagement in W10 and the contrast and brightness parameters
I don't access to C++ parameters to change to RGB color a little bug?
Hi and thx for the inputs!
Got driver 20.4.2 installed at the moment and with it, my Epson projector is stuck with Pixel format YCbCr 4:4:4 .
I checked the windows 10 color settings @ Desktop >> Display Settings >> advanced display settings >> display properties >> color management >> advanced
and the settings in there are both identical for my Dell display and the Epson projector, so no joy.
This issue has been pretty much on and off with AMD drivers for years now, as I remember coming across this one with my older AMD GFX card years ago, but then too the issue got resolved by AMD drivers eventually. Sounds to me AMD needs to find a permanent resolution for this issue, but in the mean time I am staying with the 20.2.2 which is stuck at Color format Full RGB for my projector.
Hi aldebaran and thank you for the response,
had almost given up on this Pixel Format issue, but motivated by your response, decided to give it another shot. I could not find a ICC profile for my Epson TW6700 projector, but managed to locate one for my Dell U2715H display from TFT central site's ICC database. This however did not naturally alone allow me to change Pixel format over to RGB with my Projector, but by sheer coincidence while going through AMD driver settings, I enable GPU scaling setting my Projector, and afterwards I could change the Pixel Format over to RGB with my projector! Cannot really explain what this GPU scaling setting changed with my system, and for the record can now enable RGB Pixel Format with the projector even with GPU scaling setting disabled, but still I am happy with the end result. *Thumb up*
I was on the 20.7.1 driver and just upgraded to the new 20.12.1 driver and got the same issue. I have a Asrock RX 5700 XT Taichi and I drive 5 4k TCL TVs in portrait mode. After upgrading I noticed that my first display got stuc in RGB mode at 8 bpc while my other 4 screens were in YCbCRr 4:2:2 10bpc. I couldn't change it at all. It was simply stuck no matter what I did.
I have run into this before where settings would just not work or get stuck in a specific setting. This particularly happened when I was playing with eyefinity. Needless to say, it doesn't work at all with my card and my TCL TVs. Probably the TVs. However, when I would do this I would always have to fully remove the AMD drivers in safe mode using DDU from Wagnardsoft. I use the recommended with restart mode. After restarting and reinstalling 20.12.1 all my settings work again and I am back where I need to be.
If you are still having this issue, try DDU. It has saved me from so many headaches because just simply uninstalling the driver doesn't work. DDU rips everything out and puts you back at square one. Really an amazing utility and something that I have found with AMD GPUs is a necessity if you are doing anything out of the norm.