[X2Go-User] x2go stops working on some Ubuntu 14.04 boxes

[Steven Spencer]

Qiangian,

Try removing the sessions on the server side and then see what happens
on the client. I had a similar issue and ended up doing the package
upgrades you've already done on the server end and then updating the
client as well.

sudo rm -f /var/lib/x2go/x2go_sessions
sudo x2godbadmin --createdb

Thanks,
Steve

On 03/26/2018 04:11 PM, Qianqian Fang wrote:
> On 03/26/2018 03:53 PM, Mihai Moldovan wrote:
>> Please make sure that nx-libs 3.5.99.16 is installed on the server side.
>> This sounds like a typical incarnation of the DPMS bug, fixed with
>> nx-libs 3.5.99.15. 
>
> thanks Mihai
>
>
> I confirm that the server giving the first error, i.e. "The remote
> proxy closed the connection while negotiating..."
> has indeed installed an older version of libnx-x11 (3.5.0.33~710).
>
> after letting apt-get to upgrade the nx libraries and x2go packages,
> I saw the libnx-x11 was replaced by a new package named libnx-x11-6, and
> the version is now 3.5.99.16. However, now I start seeing the 2nd error
> message on those machines, i.e. "connection failed".
>
>> However, this doesn't sound like it. Normally the DPMS bug only manifests after
>> a pretty long time (say, an hour or 1.5h, depending on DPMS settings), but not
>> right away after starting the session. I haven't yet seen such an error message
>> yet. It's possible that it's caused by the session repositioning on non-first
>> displays/nxagent crashing bug as fixed with nx-libs 3.5.99.16, but normally that
>> incarnates differently (i.e., nxagent is being started successfully, but then
>> dies quickly while starting the session without a client-side error message).
>
> here is a dump of the session.log file under the failed session:
>
>
> |NXAGENT - Version 3.5.99.16||
> ||
> ||Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com)||
> ||....||
> ||See https://github.com/ArcticaProject/nx-libs for more information.||
> ||
> ||Info: Agent running with pid '17844'.||
> ||Session: Starting session at 'Mon Mar 26 16:56:11 2018'.||
> ||Error: Aborting session with 'Unable to open display
> 'nx/nx,options=/tmp/.x2go-fangq/C-fangq-50-1522097770_stDXFCE_dp24/options:50''.||
> ||Session: Aborting session at 'Mon Mar 26 16:56:11 2018'.||
> ||Session: Session aborted at 'Mon Mar 26 16:56:11 2018'.||
> |
>
>
> strangely, the x2go window reports something differently, it says (see
> attached screenshot)
>
> |"PANIC!" Failure negotiating the session in stage 7||
> ||...||
> ||Wrong version or invalid session authentication cookie.||
> ||....||
> |
>
> are these two error messages caused by a single issue or multiple?
>
> I've already restarted x2gosever, but no dice. any other files that I
> need to reset/clear?
>
> thanks
>
> Qianqian
>
>>
>>
>> Mihai
>>
>
>
>
> _______________________________________________
> x2go-user mailing list
> x2go-user at lists.x2go.org
> https://lists.x2go.org/listinfo/x2go-user


-- 
-- 
Steven G. Spencer, Network Administrator
KSC Corporate - The Kelly Supply Family of Companies
Office 308-382-8764 Ext. 1131
Mobile 402-765-8010 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.x2go.org/pipermail/x2go-user/attachments/20180326/473c1a4a/attachment.html>