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Proton is now enabled by default on Steam to make Linux gaming simpler
(www.gamingonlinux.com)
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this post was submitted on 01 Jul 2025
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Do you mean PROTON_USE_WINED3D=1 ? If so, you don’t have Vulkan compatible hardware (GPU from like before 2012) or missing drivers. With this flag you use OpenGL rendered instead, that is inferior in every way. If you try it on modern hardware with the right driver in place you’ll get much worse performance, if it even works. This flag shouldn’t be promoted generally.
If you run ancient GPU and want to always fallback to OpenGL, you can put the line
in
/etc/environmentand reboot. No need to set that in properties for every individual game.Do you think adding to /etc/envoronment would work with kde-inhibit? I've been trying to find a way to have Steam block sleep when a game is running, which I can do on a game-by-game basis with kde-inhibit, but I want it to run for every steam game. For some reason my machine does not inhibit sleep when games are running, or even when audio or video are playing
I don't think that’s the good idea even if possible to do with env variable. This should just work correctly, you either miss something in your system or hit some nasty bug of your distro/build or it’s general KDE bug