Proton 5.13-1

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Let’s see the log, perhaps it will shred some light:

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You want to create log file to check if everything fine or file a bug, use Environment variable:

PROTON_LOG=1 %command%

Log will be saved at location, where [appid] is your game id (look up steamdb if in doubt)

~/steam-[appid].log

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• To configure Proton through Environment variables, which you may see in protondb reports (see available options)

  1. Select game title on left panel

  2. Right Button → Properties → Set launch options…

  3. Enter desired variables, separated by space and ended by %command%
     • to disable variable add =0 after
     • to enable use non 0 values