General Discussions

[dastageerkhan14]

I have read through HOWTO enable 10-bit color on Linux and know how to create a basic multi-monitor config file. The issue is that I only see it possible to enable 10-bit for the entire screen, not a single monitor.

I have tried just setting the option "Depth" on each monitor, but it does not change it: Unionwell

Section "Monitor"
    Identifier "DisplayPort-0"
    Modeline "2560x1440_144.00"  807.69  2560 2784 3072 3584  1440 1441 1444 1565  -HSync +Vsync
    Option "Depth" "24"
EndSection

Section "Monitor"
    Identifier "DisplayPort-1"
    Modeline "3840x2160_60.00"  712.34  3840 4152 4576 5312  2160 2161 2164 2235  -HSync +Vsync
    Option "Depth" "30"
EndSection

Section "Screen"
    Identifier "Screen0"
    Device "Radeon"
    Monitor "DisplayPort-0"
EndSection

I have checked and that monitor is 10-bit capable as reported by the Xorg.0.log

[ 10941.739] (II) AMDGPU(0): EDID for output DisplayPort-1
[ 10941.739] (II) AMDGPU(0): Manufacturer: GSM  Model: 5b09  Serial#: 15673
[ 10941.739] (II) AMDGPU(0): Year: 2017  Week: 9
[ 10941.739] (II) AMDGPU(0): EDID Version: 1.4
[ 10941.739] (II) AMDGPU(0): Digital Display Input
[ 10941.739] (II) AMDGPU(0): 10 bits per channel

However I only see one instance of:

[ 10941.597] (==) AMDGPU(0): Depth 24, (--) framebuffer bpp 32
[ 10941.597] (II) AMDGPU(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp pixmaps)

Which I'd imagine I should have two, one of Depth 24, and one of Depth 30.

I am using the amdgpu-pro graphics drivers on Ubuntu 20.04 if that makes a difference.