Are you using Wayland? I have the same issue on one of my machines which is running Wayland, two other machines running Xorg work as intended. Weirdly enough, switching to an X-environment does not fix the issue though.

Steam runs on CEF (Chromium Embedded Framework), if I'm not mistaken. Chromium application is also giving the same behavior, crashing that is, on the Wayland machine, even after reinstalling.

Maybe somebody has some input on this?

Google Chrome runs fine, it's only Steam crashing. I can quickly navigate to my library if I'm fast enough but it only takes seconds to crash.

Google Chrome runs fine, it's only Steam crashing. I can quickly navigate to my library if I'm fast enough but it only takes seconds to crash.

Are you using Wayland or Xorg?

Hello @Martmists-GH, disabling the Steam runtime is not supportable by Valve, any library dependency issues with that config needs to be evaluated and resolved by you and the distro's package maintainers that helped you run Steam that way.

My understanding is that when you run steam on an Arch system with the steam-native-runtime package installed, it hands off starting Steam to steam-native, which is this unsupportable method. Please test how steam-runtime behaves, and if it fails again, collect another set of logs.

Not OP here but same issue, I will post my terminal output + steam logs at the bottom, and a longer descriptive text first.

Can't speak for OP but I'm running steam-runtime by default and experiencing the same issue - both on Wayland, Xorg, and also with steam-native-runtime.

Everything was working as of less than 12h ago, and no updates to my system were made, apart from any updates steam potentially made automatically on today's launch.

So far this has had no effect:

1. Full system update
2. steam --reset
3. steam --verify
4. steam-runtime
5. steam-native-runtime
6. Reinstalled steam
7. Reinstalled steam again, trying to purge every little trace of it
8. Using Wayland
9. Using Xorg

I just can't find the common denominator here...

1. OP states he's on NVIDIA, my system that's having issues is AMD, while my NVIDIA systems are working.
2. OP and I are both on Arch, all of my systems are
3. Neither OP or I updated any of the systems, at least before experiencing the issue.

The only thing we did was go to bed with a working system, only to find Steam broke itself.

Attached you will find the logs for steam, and here you have the terminal output:

anon@main ~> steam-runtime
steam.sh[1123]: Running Steam on arch rolling 64-bit
steam.sh[1123]: STEAM_RUNTIME is enabled automatically
setup.sh[1170]: Steam runtime environment up-to-date!
steam.sh[1123]: Using supervisor /home/anon/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/bin/steam-runtime-supervisor
steam.sh[1123]: Steam client's requirements are satisfied
CProcessEnvironmentManager is ready, 6 preallocated environment variables.
[2025-01-31 17:13:01] Startup - updater built Jan 28 2025 00:50:36
[2025-01-31 17:13:01] Startup - Steam Client launched with: '/home/anon/.local/share/Steam/ubuntu12_32/steam' '-srt-logger-opened'
01/31 17:13:01 minidumps folder is set to /tmp/dumps
01/31 17:13:01 Init: Installing breakpad exception handler for appid(steam)/version(1738026274)/tid(1236)
[2025-01-31 17:13:02] Loading cached metrics from disk (/home/anon/.local/share/Steam/package/steam_client_metrics.bin)
[2025-01-31 17:13:02] Failed to load cached hosts file (File 'update_hosts_cached.vdf' not found), using defaults
[2025-01-31 17:13:02] Using the following download hosts for Public, Realm steamglobal
[2025-01-31 17:13:02] 1. https://client-update.steamstatic.com, /, Realm 'steamglobal', weight was 1, source = 'baked in'
[2025-01-31 17:13:02] Verifying installation...
[2025-01-31 17:13:02] Verification complete
UpdateUI: skip show logo
Steam logging initialized: directory: /home/anon/.local/share/Steam/logs

XRRGetOutputInfo Workaround: initialized with override: 0 real: 0xd6a7fdc0
XRRGetCrtcInfo Workaround: initialized with override: 0 real: 0xd6a7e500
steamwebhelper.sh[1273]: Using supervisor /home/anon/.steam/root/ubuntu12_32/steam-runtime/amd64/usr/bin/steam-runtime-supervisor
steamwebhelper.sh[1273]: Starting steamwebhelper under bootstrap sniper steam runtime via /home/anon/.local/share/Steam/ubuntu12_64/steam-runtime-sniper.sh
steamwebhelper.sh[1273]: Using CEF sandbox \(try with -no-cef-sandbox if this fails\)
steamwebhelper.sh[1273]: Starting steamwebhelper with Sniper steam runtime at /home/anon/.local/share/Steam/ubuntu12_64/steam-runtime-sniper/_v2-entry-point
Steam Runtime Launch Service: starting steam-runtime-launcher-service
Steam Runtime Launch Service: steam-runtime-launcher-service is running pid 1400
bus_name=com.steampowered.PressureVessel.LaunchAlongsideSteam
exec ./steamwebhelper -nocrashdialog -lang=en_US -cachedir=/home/anon/.local/share/Steam/config/htmlcache -steampid=1236 -buildid=1738026274 -steamid=0 -logdir=/home/anon/.local/share/Steam/logs -uimode=7 -startcount=0 -steamuniverse=Public -realm=Global -clientui=/home/anon/.local/share/Steam/clientui -steampath=/home/anon/.local/share/Steam/ubuntu12_32/steam -launcher=0 -no-restart-on-ui-mode-change --valve-enable-site-isolation --enable-smooth-scrolling --password-store=basic --log-file=/home/anon/.local/share/Steam/logs/cef_log.txt --disable-quick-menu --enable-features=PlatformHEVCDecoderSupport --disable-features=SpareRendererForSitePerProcess,DcheckIsFatal,ValveFFmpegAllowLowDelayHEVC
steamwebhelper.sh[1648]: Using supervisor /home/anon/.steam/root/ubuntu12_32/steam-runtime/amd64/usr/bin/steam-runtime-supervisor
steamwebhelper.sh[1648]: Starting steamwebhelper under bootstrap sniper steam runtime via /home/anon/.local/share/Steam/ubuntu12_64/steam-runtime-sniper.sh
steamwebhelper.sh[1648]: Using CEF sandbox \(try with -no-cef-sandbox if this fails\)
steamwebhelper.sh[1648]: Starting steamwebhelper with Sniper steam runtime at /home/anon/.local/share/Steam/ubuntu12_64/steam-runtime-sniper/_v2-entry-point
exec ./steamwebhelper -nocrashdialog -lang=en_US -cachedir=/home/anon/.local/share/Steam/config/htmlcache -steampid=1236 -buildid=1738026274 -steamid=0 -logdir=/home/anon/.local/share/Steam/logs -uimode=7 -startcount=1 -steamuniverse=Public -realm=Global -clientui=/home/anon/.local/share/Steam/clientui -steampath=/home/anon/.local/share/Steam/ubuntu12_32/steam -launcher=0 -no-restart-on-ui-mode-change --valve-enable-site-isolation --enable-smooth-scrolling --password-store=basic --log-file=/home/anon/.local/share/Steam/logs/cef_log.txt --disable-quick-menu --enable-features=PlatformHEVCDecoderSupport --disable-features=SpareRendererForSitePerProcess,DcheckIsFatal,ValveFFmpegAllowLowDelayHEVC
steamwebhelper.sh[1954]: Using supervisor /home/anon/.steam/root/ubuntu12_32/steam-runtime/amd64/usr/bin/steam-runtime-supervisor
steamwebhelper.sh[1954]: Starting steamwebhelper under bootstrap sniper steam runtime via /home/anon/.local/share/Steam/ubuntu12_64/steam-runtime-sniper.sh
steamwebhelper.sh[1954]: Using CEF sandbox \(try with -no-cef-sandbox if this fails\)
steamwebhelper.sh[1954]: Starting steamwebhelper with Sniper steam runtime at /home/anon/.local/share/Steam/ubuntu12_64/steam-runtime-sniper/_v2-entry-point
exec ./steamwebhelper -nocrashdialog -lang=en_US -cachedir=/home/anon/.local/share/Steam/config/htmlcache -steampid=1236 -buildid=1738026274 -steamid=0 -logdir=/home/anon/.local/share/Steam/logs -uimode=7 -startcount=2 -steamuniverse=Public -realm=Global -clientui=/home/anon/.local/share/Steam/clientui -steampath=/home/anon/.local/share/Steam/ubuntu12_32/steam -launcher=0 -no-restart-on-ui-mode-change --valve-enable-site-isolation --enable-smooth-scrolling --password-store=basic --log-file=/home/anon/.local/share/Steam/logs/cef_log.txt --disable-quick-menu --enable-features=PlatformHEVCDecoderSupport --disable-features=SpareRendererForSitePerProcess,DcheckIsFatal,ValveFFmpegAllowLowDelayHEVC
[2025-01-31 17:13:32] Shutdown

Steam logs: steam_logs.tar.gz

Hello @Martmists-GH, disabling the Steam runtime is not supportable by Valve, any library dependency issues with that config needs to be evaluated and resolved by you and the distro's package maintainers that helped you run Steam that way.

My understanding is that when you run steam on an Arch system with the steam-native-runtime package installed, it hands off starting Steam to steam-native, which is this unsupportable method. Please test how steam-runtime behaves, and if it fails again, collect another set of logs.

Yup, looks like I mistakenly associated steam with Steam Runtime. Apologies!

Hello @Martmists-GH, disabling the Steam runtime is not supportable by Valve, any library dependency issues with that config needs to be evaluated and resolved by you and the distro's package maintainers that helped you run Steam that way.
My understanding is that when you run steam on an Arch system with the steam-native-runtime package installed, it hands off starting Steam to steam-native, which is this unsupportable method. Please test how steam-runtime behaves, and if it fails again, collect another set of logs.

Yup, looks like I mistakenly associated steam with Steam Runtime. Apologies!

Wait, did this seriously fix the issue for you? I'm having no luck...