https://bugzilla.kernel.org/show_bug.cgi?id=212935
--- Comment #1 from Martin (mwolf@adiumentum.com) --- I can trigger this reliably when I let my computer boot up and don't log into Gnome. After a minute the screen goes dark and stays that way. sometimes I can remotely log into "Cockpit" and reboot the machine, but most of the time even though the system is "pingable" I have to use a hard reset to get it working again.
When I disable the screen saver and use S3 instead, the system is stable.