this post was submitted on 29 Feb 2024
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[–] [email protected] 147 points 1 year ago (3 children)

This is really frustrating. This is the only thing holding Linux gaming back for me, as someone who games with a AMD GPU and an OLED TV. On Windows 4k120 works fine, but on Linux I can only get 4k60. I've been trying to use an adapter, but it crashes a lot.

AMD seemed to be really trying to bring this feature to Linux, too. Really tragic that they were trying to support us, and some anti-open source goons shot them down.

[–] [email protected] 22 points 1 year ago* (last edited 1 year ago) (1 children)

ive found that the issue in my experience is that X11 only supports a max of 4k60, but Wayland supports 4k120 and beyond. I dont think the cable matters as the same cable im using works on windows with 4k160.

[–] [email protected] 5 points 1 year ago (1 children)

It's a matter of cable bandwidth. 4k120 4:4:4 requires more bandwidth than hdmi 2.0 can provide. You can drop down to 4:2:0, but that's a pretty bad experience and ruins the image quality.

I've been using an adapter cable, but it's really flaky, I don't know if it's a bad cable or what. But a normal hdmi cable just plain works on Windows, since the windows amd driver supports hdmi 2.1.

[–] [email protected] 1 points 1 year ago

yes, that is a valid factor. i meant more towards the type of cable doesn't mater. but yes an up to date spec of the cable is also just as important

[–] [email protected] 12 points 1 year ago (1 children)

are you unable to use display port?

[–] [email protected] 8 points 1 year ago (1 children)

I'm a bit confused by your comment. I have a 120Hz Monitor and use an AMD GPU on linux without issues. Connected via the display port on my GPU to the HDMI Port on my monitor (because samsung does not enable DDC on the display port for some reason).

[–] [email protected] 5 points 1 year ago (2 children)

I'm using an LG C2 Oled TV that doesnt have displayport.

[–] [email protected] 2 points 1 year ago* (last edited 1 year ago) (1 children)

I’m using an LG C2 Oled TV that doesnt have displayport.

Connected via the display port on my GPU to the HDMI Port on my monitor

ichbinjasokreativ seems to suggest that the viewing device he/she connects to is done via HDMI, the same as your OLED TV.

Unless I'm missing something?

Edit: You discuss this issue further down in the topic, so no need to reply.

Could have saved myself the time of replying to you if I had scrolled all the way through first, then backtracked, but that's kind of unintuitive to do, especially on a cell phone browser.

[–] [email protected] 1 points 1 year ago

No worries, I didn't see they meant an adapter cable, either.

[–] [email protected] 1 points 1 year ago (1 children)

I have one too. Go take a look at Cable Matters. I am able to play games at 4k120 with my mac. See if something will work for you and you can always send a message to their customer support to ask questions.

[–] [email protected] 2 points 1 year ago

Yeah thats the one I have. Maybe I'll ask their support. It has the latest firmware but it's so flaky about being able to do high bandwidth.