Color Range stuck at "Full" even if Limited is selected and forced in xorg.conf

Just what the title says.

I switched from HDMI to an active DP to HDMI adapter after I got a new GPU (no HDMI ports), I use a TV as a monitor.

Color range limited is an option in the dropdown, but picking it does not change the current color range. However, on my second DP native monitor, picking it instantly changes the color range.

nvidia-smi lists both color ranges as supported, and Xorg.0.log does not throw any errors regarding Option “ColorRange” “Limited” or Option “ColorSpace” “YCbCr444”

Even the ModeValidation settings don’t work.

Been racking my head over this for hours trying every possible combination, and it just seems stuck at full with crushed blacks.


Please run as root and attach the resulting nvidia-bug-report.log.gz file to your post.