Arch Linux

Just tried in a fresh VM and steam loads up fine initially. But then it won't run a 2nd time for reasons unknown...(it's not the reason mentioned here).

Clearly not everyone is affected by this libgudev "Assertion" error. There must be more to it...

Additional discussion here upstream if it's helpful: https://github.com/ValveSoftware/steam-for-linux/issues/9805

Dupe  FS#79014 

Someone needs to report it to libgudev upstream else nothing gets fixed. i.e. figure out why it's triggering the assert in systemd.

Upstream issue filed with libgudev, we'll see what they say

https://gitlab.gnome.org/GNOME/libgudev/-/issues/9

The top of the backtrace:

#0 0xf7ee4579 in __kernel_vsyscall ()
#1 0xf7a894c7 in __pthread_kill_implementation (threadid=threadid@entry=3559914304, signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:43
#2 0xf7a8954f in __pthread_kill_internal (signo=6, threadid=3559914304) at pthread_kill.c:78
#3 0xf7a36717 in __GI_raise (sig=6) at ../sysdeps/posix/raise.c:26
#4 0xf7a1e121 in __GI_abort () at abort.c:79
#5 0xe4d1876c in log_assert_failed (text=<optimized out>, file=<optimized out>, line=<optimized out>, func=0xe4d3b608 <__func__.29.lto_priv.2> "device_get_tags_generation") at ../systemd-stable/src/basic/log.c:889
#6 0xe4d21269 in device_get_tags_generation (device=<optimized out>) at ../systemd-stable/src/libsystemd/sd-device/device-private.c:103
#7 device_get_tags_generation (device=<optimized out>) at ../systemd-stable/src/libsystemd/sd-device/device-private.c:102
#8 udev_device_get_current_tags_list_entry (udev_device=0xd40594f0) at ../systemd-stable/src/libudev/libudev-device.c:863
#9 0xe5ff6fb5 in fetch_current_tags (device=0xd4059820) at ../libgudev/gudev/gudevdevice.c:146
#10 _g_udev_device_new (udevice=udevice@entry=0xd40594f0) at ../libgudev/gudev/gudevdevice.c:163
#11 0xe5ff74af in g_udev_client_query_by_subsystem_and_name (client=0xd4059df0, subsystem=0xe57c87c8 "net", name=0xd4dd4280 "wlan0") at ../libgudev/gudev/gudevclient.c:511
#12 0xe5756927 in ?? () from /home/jan/.local/share/Steam/ubuntu12_32/steam-runtime/usr/lib/i386-linux-gnu/libnm.so.0
#13 0xe5757e40 in nm_device_get_vendor () from /home/jan/.local/share/Steam/ubuntu12_32/steam-runtime/usr/lib/i386-linux-gnu/libnm.so.0
#14 0xd640bb3e in ?? () from /home/jan/.local/share/Steam/ubuntu12_32/steamclient.so

Looks like libgudev is getting used by libnm. Installing our lib32-libnm to avoid the old one from the runtime also avoids the crash.

> Installing our lib32-libnm to avoid the old one

Thanks for the debugging @heftig. This would seem to add more weight to  FS#75157 

I am affected too. Is installing lib32-libnm the correct permanent solution or do I have to to keep an eye on this issue for a better solution?

So it's not a libgudev bug afterall. In the absence of an updated steam pkg with with updated deps, someone needs to update the Wiki [1] with the known workarounds.

[1] https://wiki.archlinux.org/title/Steam/Troubleshooting#Runtime_issues