protonscr

Odd appid "0" upgrade loop and fail

steamclosed
ValveSoftware/steam-for-linux#12499 · opened 2025-11-29 by YellowOnion · updated 2025-11-29 · 1 comments · github
1 matching comments, n / p to jump
YYellowOnion 2025-11-29 github

Your system information

  • Steam client version (build number or date): 1763795278
  • Distribution (e.g. Ubuntu): NixOS
  • Opted into Steam client beta?:No
  • Have you checked for system updates?: Yes
  • Steam Logs:

steam-logs.tar.gz

  • GPU: AMD RX 5700 XT

Please describe your issue in as much detail as possible:

Seeing these lines in console when launching steam (trimmed for readability)

Proton: Upgrading prefix from None to GE-Proton10-3 (/home/daniel/.local/share/Steam/steamapps/compatdata/0/)
Proton: Upgrading prefix from GE-Proton10-3 to GE-Proton10-2 (/home/daniel/.local/share/Steam/steamapps/compatdata/0/)
Proton: Upgrading prefix from GE-Proton10-2 to GE-Proton10-1 (/home/daniel/.local/share/Steam/steamapps/compatdata/0/)
Proton: Prefix has an invalid version?! You may want to back up user files and delete this prefix.

Full Context

Vanilla Proton is my default:

Image

Steps for reproducing this issue:

No clue

Kkisak-valve maintainer 2025-11-29 github

Hello @YellowOnion, my understanding is that Steam probes all Proton versions to generate a set of hashes for the various common graphics render paths. This is needed for matching up (Valve-provided) precompiled shaders with the games you have installed. The wineprefix 0 folder is scratch space that is reused in that process and this is generally harmless noise from the third party Proton builds you've added to your install. Running games would not be affected by this.

Proton versions