Comment # 10 on bug 1185008 from Vitaly Bakulev

Experienced a very strange behaviour on 5.12.4-4.g2d71c6c-default just now.
Booted up, logged into Gnome, successfully launched terminal, launched my
standard set of work software (Brave, Telegram, Discord, QOwnNotes, Evolution,
1Password, VSCode, VM Manager) and nothing of it started. Waited for about 2
minutes, still none of GUI apps I launched have started. Terminal commands
didn't run either, everything just sort of freezed on the inside. But Gnome
Shell seemed to be ok, I was able to type and click stuff. No idea what
happened, and no logs because of dead terminal.
Rebooted again and everything is fine.