Score:0

Steam Proton recently stopped working

br flag

Trying to figure out if there was an update recently that has affected steam's wine compatibilty tool proton from working correctly.

I have been gaming on this machine for a couple years, but as of about a week ago, anything that requires proton no longer works. I've been messing around with different proton versions and launch settings, can get apps to partially start, but in general everything either crashes or doesn't fully launch.

I noticed a bunch of the python libraries it uses got updated. Any help appreciated.

Running Ubuntu 20.04.4 AMD Ryzen 5 3600 AMD Radeon rx5700

David avatar
cn flag
This is a question for Steam support.
Score:0
cn flag

In general, to narrow down things it helps to run steam from a terminal (to see its log output) and enable proton logging via the corresponding environment variable, i.e.:

PROTON_LOG=1 steam

In my case the issue was that all games were immediately closing after pressing the "Play" button, without any window popping up, as described in this reddit thread as well.

With debug logging enabled, running any game creates a file ${HOME}/steam-<PID>.log, which contained the error:

wine: /path/to/mountpoint/Steam Library/steamapps/compatdata/22200/pfx is not owned by you

And indeed, I was mounting my NTFS disk in a way that the files were owned by root, i.e., without specifying uid/gid. This issue has also been reported here on GitHub. I could solve this particular issue, by changing the fstab entry to something like:

/dev/disk/by-uuid/<DISK-ID> /path/to/mountpoint ntfs-3g nosuid,nodev,nofail,x-gvfs-show,uid=1000,gid=1000 0 0

See also this question for mounting NTFS modules.

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