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Re: unexplained crash



On Sat 18 Nov 2023 at 07:06:49 (+0100), tomas@tuxteam.de wrote:
> On Fri, Nov 17, 2023 at 07:17:08PM +0000, Adam Weremczuk wrote:
> > Yesterday SSH on my desktop PC running Ubuntu 20.04 became unresponsive.
> > 
> > The machine was responding to ping and "telnet 22" was briefly connecting
> > before connection closed.
> 
> Guessing from the context, you tried to ssh into your desktop and
> something went wrong ("became unresponsive"). What /exactly/ did
> your ssh client say?
> 
> I'd guess along the lines of "connection closed by foreign host",
> which would mean the ssh daemon is listening on the other side
> but closes the connection shortly after establishing it.
> 
> You can gather a bit more of info by adding one (or more) -v options
> to your ssh client invocation.
> 
> > The graphical login prompt was visible, but when I tried to log in, it threw
> > me to the text console. No login prompt on any virtual consoles and
> > Ctrl-Alt-Del did nothing.

    ↑↑↑↑↑↑↑↑↑↑↑↑

> > 
> > There is no information logged in wtmp, kern.log and dmesg. Nothing
> > interesting in auth.log
> > 
> > The last 40 lines from syslog look as below:
> 
> [...]
> 
> I'm not a systemd expert by a long shot, so I'll have to leave
> this to others, but my first impression of the log is that of
> a system shutting down (which is kind of strange).

They did say they tried Ctrl-Alt-Del. That shuts down (and reboots)
on my systems.

Cheers,
David.


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