Your system information

• Steam client version (build number or date): [2023-06-28 13:48:02] Startup - updater built Jun 21 2023 21:17:38

• Distribution (e.g. Ubuntu): Debian Bookworm

• Opted into Steam client beta?: No

• Have you checked for system updates?: Yes

• Steam Logs:
  steam-logs.tar.gz

• GPU: Nvidia

Please describe your issue in as much detail as possible:

Starting steam simply crashes after a short while.

gusnan@debian-i7:~/temp/steam > LC_ALL=C steam
steam.sh[33064]: Running Steam on debian 12 64-bit
steam.sh[33064]: STEAM_RUNTIME is enabled automatically
setup.sh[33186]: Steam runtime environment up-to-date!
steam.sh[33064]: Steam client's requirements are satisfied
[2023-06-28 13:53:22] Startup - updater built Jun 21 2023 21:17:38
[2023-06-28 13:53:22] Startup - Steam Client launched with: '/home/gusnan/.local/share/Steam/ubuntu12_32/steam'
06/28 13:53:22 Init: Installing breakpad exception handler for appid(steam)/version(1687386907)/tid(33271)
Looks like steam didn't shutdown cleanly, scheduling immediate update check
[2023-06-28 13:53:22] Loading cached metrics from disk (/home/gusnan/.local/share/Steam/package/steam_client_metrics.bin)
[2023-06-28 13:53:22] Failed to load cached hosts file (File 'update_hosts_cached.vdf' not found), using defaults
[2023-06-28 13:53:22] Using the following download hosts for Public, Realm steamglobal
[2023-06-28 13:53:22] 1. http://media.steampowered.com, /client/, Realm 'steamglobal', weight was 1, source = 'baked in'
[2023-06-28 13:53:22] Checking for update on startup
[2023-06-28 13:53:22] Checking for available updates...
[2023-06-28 13:53:22] Downloading manifest: http://media.steampowered.com/client/steam_client_ubuntu12
[2023-06-28 13:53:22] Manifest download: send request
[2023-06-28 13:53:22] Manifest download: waiting for download to finish
[2023-06-28 13:53:22] Manifest download: finished
[2023-06-28 13:53:22] Download skipped: /client/steam_client_ubuntu12 version 1687386907, installed version 1687386907, existing pending version 0
[2023-06-28 13:53:22] Nothing to do
[2023-06-28 13:53:22] Verifying installation...
[2023-06-28 13:53:22] Performing checksum verification of executable files
[2023-06-28 13:53:23] Verification complete
XRRGetOutputInfo Workaround: initialized with override: 0 real: 0xf3e45780
XRRGetCrtcInfo Workaround: initialized with override: 0 real: 0xf3e44050
GetWin32Stats: display was not open yet, good
Loaded SDL version 3.0.0-1782-g214d5daa3
Gtk-Message: 13:53:23.345: Failed to load module "gail"
Gtk-Message: 13:53:23.345: Failed to load module "atk-bridge"
GetWin32Stats: display was not open yet, good
steamwebhelper.sh[33283]: Runtime for steamwebhelper: defaulting to /home/gusnan/.local/share/Steam/ubuntu12_64/steam-runtime-heavy
steamwebhelper.sh[33283]: glibc >= 2.34, partially disabling sandbox until CEF supports clone3()
Could not connect to X session manager: Authentication Rejected, reason : None of the authentication protocols specified are supported and h
CAppInfoCacheReadFromDiskThread took 0 milliseconds to initialize
/home/gusnan/.local/share/Steam/steam.sh: line 798: 33271 Segmentation fault      "$STEAMROOT/$STEAMEXEPATH" "$@"

Steps for reproducing this issue:

1. Starting steam - see log from terminal above.
2. Simply wait.

This is on Debian Bookworm, running X, nvidia drivers. Worked just fine before updating from Debian 11 to 12 (and in the same time there were updates to the steam client too).