Ubuntu 20.04.3 desktop (Cinnamon) - SSH disconnects when user logs off the desktop!

[Colin Law]

On Sun, 23 Jan 2022 at 11:12, Bo Berglund <bo.berglund at gmail.com> wrote:
>
> Except the gz file is 3.6 MB whereeas the syslog itself is more than 20 MB...

Well all I can say is that I downloaded it using chrome and I ended up
with a text file 20MB long with a .gz extension which is the original
syslog, not a gz file.

>
> >The reason grep has problems is that there are non-printable
> >characters in the file.  The start of each reboot is marked by a jump
> >of a few minutes in the timestamp and at that point there are often
> >unprintable characters (probably nulls, but I haven't checked that
> >far).  This usually means that there was a power failure or hard
> >reset.
>
> But it only ever happens if the system is waiting for a local system login...
> When either desktop is active (not counting VNC because that is not stopping
> this), then the system is stable "forever"...

As I said, something very odd is going on.  The syslog just stops
without a normal shutdown so something reset the processor.

>
> I just made a test as follows:
> 1) The system has been on the Cinnamon desktop on the hardware since 12 hours at
> least
> 2) I have had a PuTTY session open since then too
> 3) This morning 11:39:00 I logged out of the desktop and stay on the login
> screen
> 4) At 11:45:23 the on-boot script was called after a reboot happened
>
> So it took 384 seconds after I logged off the GUI session until the system was
> done rebooted and called the crontab on-boot entry for reporting.
>
> The interval between calls thereafter is very accurate as 384 +/- 1 second or
> so.
>
> I opened PuTTY again and ran journalctl -b -1 -e and got this at the time of
> logout and forward:
>
> jan 23 11:39:03 asposerver gnome-session-binary[14694]: Entering running state
> jan 23 11:39:03 asposerver xbrlapi.desktop[15015]: openConnection: connect: No
> such file or directory
> jan 23 11:39:03 asposerver xbrlapi.desktop[15015]: cannot connect to braille
> devices daemon brltty at :0
> jan 23 11:39:04 asposerver gnome-shell[14745]: Registering session with GDM
> jan 23 11:39:09 asposerver gnome-shell[14745]: Warning: Failed to start
> gsd-xsettings
> jan 23 11:39:09 asposerver gnome-shell[14745]: JS WARNING:
> [resource:///org/gnome/shell/ui/layout.js 24]: reference to undefined property
> "MetaWindowXwayland"
> jan 23 11:39:12 asposerver systemd[14673]: tracker-extract.service: Succeeded.
> jan 23 11:39:32 asposerver tracker-store[14789]: OK
> jan 23 11:39:32 asposerver systemd[14673]: tracker-store.service: Succeeded.
> jan 23 11:39:33 asposerver systemd[1]: fprintd.service: Succeeded.
> jan 23 11:39:33 asposerver systemd[1]: systemd-localed.service: Succeeded.
> jan 23 11:39:33 asposerver systemd[1]: systemd-hostnamed.service: Succeeded.
> jan 23 11:40:03 asposerver geoclue[14842]: Service not used for 60 seconds.
> Shutting down..
> jan 23 11:40:03 asposerver systemd[1]: geoclue.service: Succeeded.
>
> That ends the output...

As I said, syslog just stops and the system restarts.
Do you see a reboot on the screen when it happens?  You won't need to
be logged in when you do that.  If not reboot then what do you see?

Colin

>
>
> --
> Bo Berglund
> Developer in Sweden
>
>
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