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@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
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