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

[Hakan Bayındır]

Hi Ulrich,

Thanks for the pointer. I've dug the archive, but not very deeply to be 
honest. Will give another shot.

Happy weekends, cheers,

Hakan

On 19 Mart 2022 Cumartesi 22:45:19 +03 Ulrich Sibiller wrote:
> 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_______________________________________________
> > x2go-user mailing list
> > x2go-user at lists.x2go.org
> > https://lists.x2go.org/listinfo/x2go-user