Does the driver even support custom YCbCr?

The GUI only shows RGB and YCbCR444 while my TV does support other values.
Neither --force-yuv420 nor

Option “ModeValidation” “NoEdidHDMI2Check”
Option “ColorSpace” “YCbCr422”

work. I’m on ubuntu20.04/495.46 with an rtx 2080. Any ideas?

I tried to upload the report log, but it threw an error: “Sorry, there was an error uploading that file. Please try again.”

I uploaded it here: https://easyupload.io/a44mjq

Explicitly setting different color-spaces isn’t supported by the driver, it’s implicitly creating different modes for it. Though it’s always hard to guess which mode sets which colorspace.
Please set

Option "ModeDebug" "true"

in the device setion of your xorg.conf and create a new nvidia-bug-report.log.

Linked it here: https://easyupload.io/uwtnh4

Looks like nvidia cut displaying colorspace from the modedebug output so I don’t know if it’s even using it.

I need this feature to have 4k120hz/hdmi2.0 by sacrificing some visual clarity temporarily. Is there a plan to support it in the future?

Any news? This should be a basic feature…