Broken colors on RX 5700 with adjusted brightness
Submitted by Miroslav Lichvar
Assigned to Default DRI bug account
I have an RX 5700 card connected to a monitor which doesn't display dark colors very well. The brightness needs to be adjusted in software. I use the xcalib tool like this:
xcalib -a -b 10 -co 90
This displays dark colors well, but some images/videos have weird artifacts. After playing with a color picker it looks like colors that have the green component zero are much brighter than they should be. For example, color #750000 is much brighter than #750100. I'll attach some images that show the problem.
When the monitor is connected to a different computer (with a non-AMD GPU) configured with the same xcalib commands, the problem disappears, so it seems to be specific to the hardware/driver.
Please let me know if you need more information.