On 2026-03-22, alain williams <[email protected]> wrote: > On Sun, Mar 22, 2026 at 04:41:24PM -0000, CGS wrote: > >> > I have a hardware problem (graphics card occasionally crashes, I shall get >> > a >> > new one next week). This is what made me aware of the problem. I can ssh >> > into >> > the machine and poweroff (reboot is not enough, power cycle needed) - >> > which is >> > what I did. I now send instances of the editor SIGTERM before typing >> > poweroff - >> > thus it saves modified buffers. >> >> Right. I think the crashed system isn't performing a canonical poweroff. > > Reboot does not do a power cycle. > > The graphics card crashes (system log has messages complaining about it), > sometimes crashes the system but generally not - thus I can ssh in. > >> Try powering off the machine when the system isn't crashed; this will >> demonstrate whether there's a bug or not. > > Tried that and I get the same problem (in a VM, but will work the same). Why > did > you think that I did not try that ?
So with Debian Trixie in a VM poweroff doesn't send a SIGTERM to processes. Have you filed a bug report? This seems like a big one. How about not in a VM? Have you tried that, too?
