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Some months ago I tried using Ubuntu (18.04) as my gaming setup. There I used Steam and its compatibility layer Proton. It worked just fine.

Now, I am using Debian (12), because my gaming PCs sata controller has given up. I use the same graphics card (Nvidia GTX 1070 FE / Drivers nividia-driver 470.x). Also I am using a fresh Steam installation. But unfortunately, I can't get Proton running correctly.

I always have errors about DirectX (9, 10, 11). The most games will only start on using the PROTON_USE_WINED3D=1 var, but in some games this seems to be even slower than starting the games directly in Wine. Also I don't remember that I have ever needed this to get the games running on Ubuntu 18.04.

So what I have to do to get Proton on Debian running as on Ubuntu?

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    I would suggest asking this on unix.stackexchange.com Dec 29, 2021 at 12:24
  • Ubuntu and Debian are still very different animals despite similarities, so it may simply not be possible for your setup to be made to work properly without dev intervention.
    – l3l_aze
    Jan 3 at 10:39
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    Can you elaborate how you're running Proton? Are you enabling the compatibility layer through Steam settings, or running it independently?
    – Dr-Bracket
    Jan 4 at 5:48

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