[X2Go-User] Sessions can't be suspended, disconnected sessions can't be resumed.

[Ulrich Sibiller]

I am no expert in x2go server behaviour and session handling. But I
remember we had something similar here on the mailing list before.
Maybe it helps to consult the archive at
https://lists.x2go.org/listinfo/x2go-user

Uli

On Sat, Mar 19, 2022 at 8:34 PM Hakan Bayındır <hakan at bayindir.org> wrote:
>
> Hello all,
>
> I'm having a strange problem with a long-running X2Go installation. Users
> cannot resume their "disconnected" sessions. The client/server starts a new,
> clean one for them. I've debugged the issue but I was unable to paint a
> coherent picture. Here what I've found:
>
> - Disconnected sessions are still active and they're in suspended state. /
> tmp/.x2go-$USER/$SESSIONPATH/state files show "SUSPENDED" for the same
> sessions which are running at the background.
>
> - However "TERMINATED" sessions are not cleaned. They've piled up.
>
> - "x2golistsessions_root" returns empty, even if there are active, running
> sessions. Running "x2golistsessions" under a session via user also returns
> empty.
>
> - The SQLite3 database in /var/lib/x2go is empty except "used_ports" table.
> Even in that table there are stale entries, but the list is not very long.
>
> - x2gocleansessions logs only show usual session startup woes.
>
> - unresumable sessions show that the connection has disconnected unexpectedly,
> hence X2Go did normal resuming operations.
>
> - Suspending a session via client fails. Clicking close button does nothing,
> right clicking to tray icon and selecting suspend shows an error dialogue:
> "Failed to suspend with session ID $USERNAME-$DISPLAY-$ID-$DE-$COLORDEPTH"
> (It's properly populated, so the ID is there).
>
> The thing is getting more complicated since none of the commands have help,
> verbose outputs and cannot debug anything very deeply.
>
> I've deployed this thing to much larger systems before, and it was also
> working flawlessly here, and I'm at loss currently.
>
> Lastly, the OS is CentOS 7, and it's updates to top patch level, including the
> latest X2Go server release done a today or a couple of days ago.
>
> Any help is greatly appreciated,
>
> Cheers,
>
> Hakan_______________________________________________
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