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[BUG] Steam error 100 when running SteamVR on a bcachefs filesystem

steamvropen bug
ValveSoftware/SteamVR-for-Linux#831 · opened 2025-11-15 by FerrahWolfeh · updated 2025-11-15 · 0 comments · github
FFerrahWolfeh 2025-11-15 github

Describe the bug
I am using a Meta Quest 2 through steamlink to connect to SteamVR, however, while SteamVR itself successfully starts, it fails to connect to Steam and the Steam window shows an error code 100 with a message about "installation not found". My system currently is running the rootfs on a bcachefs partition. Changing the home partition to btrfs or ext4 fixes the problem, but it isn't currently a viable option.

To Reproduce
Steps to reproduce the behavior:

  1. Have a home directory residing on a bcachefs partition created with the latest bcachefs-tools and bcachefs-dkms version (1.32.1)
  2. Install steam and steamvr normally
  3. Launch steamlink on headset and connect to the computer client
  4. Steam error 100: Installation not found

Expected behavior
SteamVR should initialize the steam API and show the steam menu normally instead of the placeholder one.

System Information (please complete the following information):
Please use the latest Steam beta client and SteamVR beta for your bug reports!

  • Steam client version (build number or date): 1763148904
  • SteamVR version: 2.14.2
  • Distribution (e.g. Ubuntu): Arch Linux - linux-zen 6.17.7-zen1-2-zen
  • Steam runtime diagnostics: runtime.json
  • Steam and SteamVR logs: steam-logs.tar.gz
  • Minidumps: steam-minidumps.tar.gz

Screenshots
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