The workaround at https://github.com/ValveSoftware/steam-for-linux/issues/11406#issuecomment-2445993856 works for me. So it seems the issue was caused by some recent update of the Steam client.
Hello @Imarok, please copy the contents of Steam Runtime Diagnostics from Steam (Steam -> Help -> Steam Runtime Diagnostics) and put it in a gist, then include a link to the gist in this issue report.
Hello @kisak-valve, here is the Steam Runtime Diagnostics: https://gist.github.com/Imarok/c58e4286920faf7d6f897267dc4d236f.
Though, be aware I took that using the older version of the Steam Client that I installed as a workaround (see my previous comment.)
"version" : "4.6.0 NVIDIA 390.157", is the key detail from your runtime diagnostics. This video driver release series is end of life since 2022 and encounters #10980. Update your video driver to a newer release series.
Thank you for the response. I had to manually install a newer graphics driver. That fixed the issue. Thanks a lot :)
(I have no idea why Ubuntu didn't do this on it's own...)
Your system information
apt update && apt upgradePlease describe your issue in as much detail as possible:
When I start the Steam client the normal Steam window does not open.
The small update progress window still appears sometimes.
I tried reinstalling the steam package. Using the deb from Ubuntu as well as the deb from the steam web page. Nothing helped.
Steps for reproducing this issue:
steam.