Unwanted shutdown/start of a computer with Gentoo

[kgdrenefort]

Hi,

I post here, into Other Things Gentoo, for something that is likely non directly a Gentoo’s problem, but I am not sure at this point.

Context:

A few months ago I mounted a new computer for my fiancée, which run Gentoo and Windows 11.

Problem:

Without obvious reason, the computer suddenly shutdown, then seems to start. It does not looks like a reboot in my opinion, but I can be wrong.

It looks like a shutdown followed by a start because it does not properly shuts everything it should: When I restart the computer, you can see some line indicating the normal shutdown/restart process, here it doesn’t.

It’s like the power button was pressed or worst: the A/C units was disconnected. As explained, it is followed by a normal starting of the computer.

We do not saw that on Windows 11, mostly it’s random. First days it "hard rebooted" like three times.

Then only once or twice next days.

Since last days it was OK, but yesterday evening it does that again. The only things we remember was me putting my feet on the desk while I was sit in my desktop chair.

Fix / and stuffs we tried:

1/ In doubt we memtested the RAM for a big night, no errors reported, 13 or 16 passes.
2/ We spotted, but it was maybe random, that the first days we had a lot of the "hard reboot" while she was using a connected wi-fi/bluetooth antenna. So we removed it, no problem for a few days. Then we connected it back, no problem for a few days until yesterday evening.
3/ In doubt, I tested the GPU but running in extrem the Superposition Benchmark tools, wondering if a lot of activity for CPU/GPU was in cause. Nothing.
4/ I also used for some dozen of minutes GIMPS (a tool that makes the CPU generate a lot of prime number, or something like that), nothing.
5/ Checking if the A/C units connection was ok, looks like.
6/ Checking in any wire was disconnected to the power strip, looks OK. My own computer is connected on the same power strip than her, no problem on my own desktop.

3 and 4 were, honestly, «why not» tests.

The only non-new pieces of hardware the computer use or is connected too:

- SSD hard drive (Samsung EVO 870)
- SSD hard drive (Samsung EVO 860)
- HDD Drive (Seagate ST3000DM001, which is quite old now, was buy in 2018 and hold only some datas, very few activities on it)
- An external hard drive connected in USB 3
- Keyboard and mouse (using bluetooth USB dongle)
- A webcam in USB
- A top-screen lamp in USB (the kind that is added on the top of the screen)
- An old USB hub

I came here for ideas, mostly. Did you had this kind of problem before ? For me, it looks really like an hardware problem, and she doesn’t use Windows 11 enough to have spotted it while using it so…

The Gentoo is up-to-date (at least once a week), she’s using the last 23.0 profile, kernel 6.6.21-gentoo-dist with systemd.

Following like is the dmesg (2838 lines) while writing this post : https://0x0.st/XzNR.2024-16h

Below the lines where I spotted error, relevants or not to me:

[kgdrenefort]

About the NVidia problem, I just had an update of the driver, a reboot will get rid of it mostly, so it’s not that important I think.
_________________
«Gentoo does not have problems, only learning opportunities.» - NeddySeagoon
«If your Gentoo installation isn't valuable to you, feel free to continue to ignore the instructions.» - figueroa

[kgdrenefort]

An important addition:

I might have been wrong, just got a suspend to made, as explained it (the computer) stay "woken", fan is rolling, also the led indicator for hard-drive activity it seems was blinking.

After suspend, black screen, only mouse AND I was able to get to a TTY, restart SDDM and login again, with an error: can’t connect to KDE, more or less. Had to reboot, this time, only the mouse was responding.

Link to my dmesg before SDDM restart and crashed the computer while logging: https://bpa.st/YURA

It seems interesting from line 1139: