Looks like you resume from suspend went bad and hence you have latter
trouble in shutting down.
Please open FDO ticket for this (https://bugs.freedesktop.org/) + attach
full dmesg log without grep.
S3 was working before so looks like regression.
Try maybe 4.17 kernel and if you find it
Common shutdown seems to be ok. After any suspend (pressing stand-by button or
close lit), I am not able to shutdown successful. The system hangs on shutdown.
First some hw-info, then the bad error log. Please let me know, if you need
further infos.
Best, john.
> inxi -Fx
System:Host: