ValveSoftware / ValveSoftware/Proton

Proton fails to populate dosdevices

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Dominant language
C++
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Description

I have a separate ext4 drive that's exclusively for my games, but when I try to install games with Proton to it none of them launch, becuase pfx/dosdevices is empty. Any combination of game and proton version has so far failed to start without manually populating pfx/dosdevices with the expected symlinks. I have two library folders, one in the default .steam-location and the other on the second drive. Installing games to .steam works fine.

All games give error logs similar to this: https://gist.github.com/Kimplul/e8d7fb4dcb2119a9cf6e3893258b812c
And here's my system information: https://gist.github.com/Kimplul/9a5ccd79801550c45d1d2f8cbc0e38da

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing the linked Proton error log and system-information gist, then reproduce installation to the secondary ext4 Steam library and compare it with the working .steam library. Trace why pfx/dosdevices remains empty; done means the expected symlinks are created automatically and the affected games launch without manual changes.

Written by the indexing model from the issue text.

Assessment

Tech stack
linux
Domain
operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
42/100

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