Update:
- SysRq commands keep working
- Memtest86 and Disks -> SMART Data & Self Test didn't show any problems with
memory or SSD
So I assume it's a problem that originates in kernel 4.15.0-151, as 147
doesn't show any of the problems and nothing else has changed between
booting 151 vs. booting
I didn't try the SysRq commands, as I didn't know about them. My
impression was, that everything just stopped working, nothing except the
hard reset seemed to cause any reaction, hardware or otherwise.
The syslog didn't show anything unusual either. I compared several
versions of the syslog after
Public bug reported:
With kernel 4.15.0-151 the system very often (up to several times an
hour) hangs up completely and doesn't react to input of any kind. It
then has to be restarted the hard way (i.e. by prssing the power button
for several seconds).
At other times a message is displayed, sayin
