Bug#976101: systemd: Offline update installation in systemd (via gnome-update) doesn't cleanly unmount filesystem

[Michael Biebl]

Am 08.12.20 um 20:39 schrieb Josh Jones:
> Amazing, that has taught me something very useful!
> 
> shutdown-log.txt attached and error is visible!
> 

Thanks.
So from a quick glance it seems fwupd keeps your / busy and prevents it 
from being remounted ro.


https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=953679 looks related

If you don't have a system/BIOS vendor supported by fwupd, you might 
consider purging the package to verify that the problem is solved.



Michael