New GTX4090 HDR Support on Linux?

Graphics / Linux Linux
1

Hello all,

after I bought a GTX4090 and can now finally enjoy super cool graphics, I was wondering how it is about HDR support for Linux? You can’t really read anything about it, everything is already several years old. What is the status of HDR?

NVIDIA-SMI 530.41.03 (Ubuntu Repository)
Kernel 5.19.0-45-generic

cat /etc/X11/xorg.conf.d/20-nvidia.conf                                                                                                           130 ↵
Section "OutputClass"
    Identifier  "nvidia"
    MatchDriver "nvidia-drm"
    Driver      "nvidia"
    Option "TripleBuffer" "True"
    Option "AllowEmptyInitialConfiguration"
    ModulePath "/usr/lib/x86_64-linux-gnu/nvidia/xorg"
    Option "metamodes" "5120x1440 { ForceFullCompositionPipeline = On }"
EndSection

Thanks and Best Regards :)

2

Any news about Driver 565 and Kernel 6.12?

3

It works fine now, but you need to use Plasma or Hyprland, if I’m not wrong, and run your games using gamescope.
Enable HDR in DE/WM settings and use something like this in the game’s Steam launch options:

gamescope --hdr-enable -w 3840 -h 2160 – %command%
(set the resolution parameters according to your display)

1 Like
4

I suspect that this only works from Plasma 6.x onwards. Because in Plasma 5 there is no HDR option. I have to test that with gamescope first. Thanks.

5

Yes, HDR support was introduced in Plasma 6. You can use HDR launching gamescope from the terminal in embedded mode (booting in multi-user target) with the appropiate parameters without Plasma 6, but you lose VRR that way, at least when I tried it.