Computer does not shutdown, it reboots - reprise

My computer has started behaving oddly. Back in 2024 other people were seeing something similar. Now my computer is doing it.

My computer actually shuts down - you can hear it stop - pause - then it starts again.

My suspicion is that one of my attached USB devices, probably the mouse (known to cause some odd behaviour).

Does it happen if the computer is running another OS?

I used to run FreeBSD on this workstation. When this shut down, it stayed shut down. The same was true of Qubes OS until very recently.

The mouse kept giving errors when the text interface for installing FreeBSD was running, so during installation I removed it. So now I experimented with my Qubes OS installation, removing the mouse after shutdown to see if this fixed the problem - it didn’t. I also tried removing the mouse and the keyboard to see if this fixed the problem - it didn’t. So the problem, slight as it is, isn’t caused by a bad USB device.

I did discover that there is an Advanced Qube setting for the number of virtual processors - I increased this from 2 to 4, and YouTube had much smoother video when in a non-native display resolution (Theatre Mode). So that’s a step forwards at least. I’ve just got to sort out the hissing audio. The drawback of having a nice set of headphones…

See Audio qube guide to have an audio mixer system to use USB headsets

Hi, FrancisKing381. Can I know whether or not the system in question is based upon AMD (CPU only) or not?

I had a problem that cropped up after an update shifted the overall system OS (at dom0 vs. at the appvm level & without me utilizing the early adopter route of kernel-latest or anything outside of Qubes vanilla) & since I use multiple systems that use Qubes & it only seems to have occurred on my AMD system, I observed as much on the forum at the time. If you have an Intel CPU then it would not seem to be related.

Note: Ever since the update to 6.12.18 my lone AMD-based Qubes system (others are all Intel) doesn't shut down when told to (restarts so that I must power it off manually)

No responses, which I took in stride since I operate differently than a lot of people do. I have not been able to dig much into this & have waited for other people to protest/comment on either my post or make ones of their own. If you use a dom0 terminal window & try poweroff or the other systemd commands for commanding the system to shutdown it likely behaves the same but perhaps there is something here which changes between architectures or systemd components & perhaps someone can have a looksie. This used to work before the move to more recent kernels & is a minor inconvenience.