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
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