ValveSoftware / ValveSoftware/Proton

Failure to create new prefixes

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Dominant language
C++
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Description

Proton version: experimental-7.0-20230113
OS: SteamOS 3.5 20230110.1000

Sometimes, when starting new games, Proton will fail to create new prefixes, for one reason or another.
To work around this, an existing prefix must be copied, or use Proton-GE.

Terminal output:
image

I have also had this happen citing pfx/creation_sync_guard to be the cause.

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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 reproducing the failure described in the terminal output, including the pfx/creation_sync_guard case, on the reported Proton and SteamOS versions. Trace the new-prefix creation path and verify that starting a new game reliably creates a usable prefix without requiring a copied prefix or Proton-GE.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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