Re: How to investigate sudden shutdown?
On 14.12.2022 12:22, Tobias Diekershoff
wrote:
Hey everyone,
perhaps someone of you can help me with tool / log file I have not investigated
so far. I have a Thinkpad with Debian Bullseye on it, running KDE/Plasma as main
desktop environment and from time to time it just turn off without prior
indication to do so.
Does it power off unexpectedly while you actively working on it, or
you just see it powered off when you check it after a while?
These kinds of symptoms are hard to diagnose and usually indicate a
hardware problem.
Please, give us more information about your laptop. You can use
"inxi" utility for that:
# inxi -a -v8 -z -za
You can send the output from "inxi" to paste service[1] and
provide us with just a link to it in next mail.
Is laptop's battery(-ies) in good shape, i.e. it can sustain laptop
at least for a few minutes with PSU disconnected?
If battery is dead, disconnect the battery and try to reproduce the
issue with only PSU connected.
It it not particular warm before and journalctl / dmsg logs are looking
unsuspicious around these sudden shutdowns for me.
Any pointer what else could be investigated (and I do realize that these are
very vague symptoms) would be appreciated!
A good place to start is to check journald logs for previous boot:
# journalctl --boot -1
"-1" is an index, so "0" is current boot, "-2" is two boots prior,
etc.
[1] https://paste.debian.net/
--
With kindest regards, Alexander.
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