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Except, annoyingly, HDMI 2.1 doesn't work on Linux. So, I'm still using an Nvidia card on a mostly Linux desktop. But I wish I didn't - the Linux Nvidia drivers are absolutely horrible.


Just curious, have you gotten 4k@120Hz to work on the desktop?

My impression is that with nVidia's drivers, 4k@120Hz is only possible in Wayland, not X.org. I haven't had a chance to test that theory though.


Yep it works on Xorg, with full 4:4:4 chroma. However, the nvidia driver seems to lock my refresh rate to 119.88 because I'm using an OLED TV.


Nice! Would you mind sharing some more details of your setup?

I can't remember the exact roadblocks I hit, but I was using:

- Pop!_OS 21.10

- nVidia 3070

- Samsung Q90 via HDMI 2.1 (with correct TV input port, various settings, and a known-good HDMI cable.)


Sure - I'm using Gnome 40/Xorg, latest 5.10 kernel (on Nixos 21.11), nvidia 3080, LG CX48 4k/120hz screen with a certified ultra high speed HDMI cable.




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