Hey Alexander! > > 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?
Yes to both. > 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. Here is the output https://paste.debian.net/hidden/b7901559/ > Is laptop's battery(-ies) in good shape, i.e. it can sustain laptop at least > for a few minutes with PSU disconnected? Yes, the batteries last for at least 3-4 hours still. > 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 Thanks for that hint, I'll have a look when the shutdown happens next time. Right now I don't have the time to figure out which last boot process was the last that failed ;-) Tobias
