[X2Go-User] nxagent

Mario Theodoridis mario at schmut.com
Tue Mar 6 15:03:52 CET 2018 

On 06/03/18 14:18, martti pitkanen wrote:
>
> Hi,
>
> Is there hands-on instructions how to downgrade to Saimaa in Ubuntu 
> (4.13.0-)?
> X2Go sessions terminate in random way.
>
Yes.

This is what i just did more or less following Stefans advice.


sudo mv x2go-stable-trusty.list x2go-stable-trusty.list.not
sudo add-apt-repository ppa:x2go/saimaa
sudo apt-get update

sudo apt-get remove libnx-x11-6:i386 nxagent nxproxy nx-x11-common 
x2goclient x2goserver* libx2go-log-perl libx2go-server-db-perl 
libx2go-server-perl libxcomp3:i386 libxcompshad3:i386
sudo apt-get install x2goserver x2goserver-xsession

This leaves me with

  dpkg -l | egrep "(x2go|nx)" | sort
ii  libjs-sphinxdoc 1.2.2+dfsg-1ubuntu1.1                        
all          JavaScript support for Sphinx documentation
ii  libnx-x11-6:i386 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
i386         nx-X11 client-side library
ii  libnx-xcomposite1:i386 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
i386         nx-X11 Composite extension library
ii  libnx-xdamage1:i386 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
i386         nx-X11 damaged region extension library
ii  libnx-xdmcp6:i386 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
i386         nx-X11 Display Manager Control Protocol library
ii  libnx-xext6:i386 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
i386         nx-X11 miscellaneous extension library
ii  libnx-xfixes3:i386 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
i386         nx-X11 miscellaneous 'fixes' extension library
ii  libnx-xinerama1:i386 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
i386         nx-X11 Xinerama extension library
ii  libnx-xpm4:i386 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
i386         nx-X11 pixmap library
ii  libnx-xrandr2:i386 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
i386         nx-X11 RandR extension library
ii  libnx-xrender1:i386 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
i386         nx-X11 Rendering Extension client library
ii  libnx-xtst6:i386 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
i386         nx-X11 Testing -- Record extension library
ii  libxcomp3:i386 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
i386         nx-X11 compression library
ii  libxcompext3:i386 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
i386         nx-X11 protocol compression extensions library
ii  libxcompshad3:i386 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
i386         nx-X11 shadowing library
ii  nxagent 2:3.5.0.33-0~201711080756~ubuntu14.04.1      i386         NX 
agent
ii  nx-x11-common 2:3.5.0.33-0~201711080756~ubuntu14.04.1      
all          nx-X11 (common files)
ii  qtcreator-plugin-qnx:i386 
3.0.1+14.04.20140410.1-0ubuntu1              i386         QNX plugin for 
Qt Creator IDE
ii  x2goagent 2:3.5.0.33-0~201711080756~ubuntu14.04.1      all          
X2Go agent
ii  x2goserver 4.0.1.21-0~201711081403~ubuntu14.04.1        i386         
X2Go server daemon scripts
ii  x2goserver-extensions 4.0.1.21-0~201711081403~ubuntu14.04.1        
all          X2Go server daemon scripts (extensions)
ii  x2goserver-xsession 4.0.1.21-0~201711081403~ubuntu14.04.1        
all          X2Go server daemon scripts (Xsession runner)
rc  libx2go-server-db-perl 4.1.0.0-0~1517~ubuntu14.04.1                 
i386         Perl X2Go::Server:DB package
rc  x2goclient 4.1.1.1-0~1719~ubuntu14.04.1                 i386         
X2Go Client application (Qt4)
rc  x2goserver-common 4.1.0.0-0~1517~ubuntu14.04.1                 
i386         X2Go Server (common files)
rc  x2goserver-fmbindings 4.1.0.0-0~1517~ubuntu14.04.1                 
all          X2Go Server (file manager bindings)
rc  x2goserver-printing 4.1.0.0-0~1517~ubuntu14.04.1                 
all          X2Go server (printing support)
rc  x2goserver-x2goagent 4.1.0.0-0~1517~ubuntu14.04.1                 
all          X2Go Server's X2Go Agent

Unfortunately i can no longer connect. It connects then disconnects.
This is the session log

$ cat /tmp/.x2go-mario/C-mario-56-1520344207_stDKDE_dp24/session.log

running as X2Go Agent

NXAGENT - Version 3.5.0

Copyright (C) 2001, 2011 NoMachine.
See http://www.nomachine.com/ for more information.

Info: Agent running with pid '6173'.
Session: Starting session at 'Tue Mar  6 14:50:08 2018'.
Info: Proxy running in server mode with pid '6173'.
Info: Waiting for connection from 'localhost' on port '52991'.
Info: Accepted connection from '127.0.0.1'.
Info: Connection with remote proxy completed.
Info: Using WAN link parameters 1408/24/1/0.
Info: Using agent parameters 5000/5/50/0/0.
Info: Using cache parameters 4/4096KB/8192KB/8192KB.
Info: Using pack method '16m-jpeg-9' with session 'unix-kde-depth_24'.
Info: Using ZLIB data compression 1/1/32.
Info: Using ZLIB stream compression 1/1.
Info: No suitable cache file found.
Info: Listening to X11 connections on display ':56'.
Error: Aborting session with 'Unable to open display 
'nx/nx,options=/tmp/.x2go-mario/C-mario-56-1520344207_stDKDE_dp24/options:56''.
Session: Aborting session at 'Tue Mar  6 14:50:09 2018'.
Session: Session aborted at 'Tue Mar  6 14:50:09 2018'.
Warning: Signals were not blocked in process with pid '6173'.
Info: Your session has died before reaching an usable state.
Info: This can be due to the remote X server refusing access to the client.
Info: Please check the authorization provided by your X application.
Info: Waiting the cleanup timeout to complete.

Other logs have the following:

$ sudo xtail /var/log/syslog /var/log/auth.log /var/log/ConsoleKit/history
*** /var/log/auth.log ***
Mar  6 14:50:04 lindev sshd[5665]: Accepted password for mario from 
192.168.11.6 port 35874 ssh2
Mar  6 14:50:04 lindev sshd[5665]: pam_unix(sshd:session): session 
opened for user mario by (uid=0)

*** /var/log/syslog ***
Mar  6 14:50:04 lindev console-kit-daemon[2143]: GLib-CRITICAL: Source 
ID 64 was not found when attempting to remove it

*** /var/log/ConsoleKit/history ***
1520344204.337 type=SEAT_ADDED : seat-id='Seat6' seat-kind=1
1520344204.339 type=SEAT_SESSION_ADDED : seat-id='Seat6' 
session-id='Session5' session-type='' session-x11-display='' 
session-x11-display-device='' session-display-device='/dev/ssh' 
session-remote-host-name='fatty.de.regify.com' session-is-local=FALSE 
session-unix-user=1000 session-creation-time='2018-03-06T13:50:04.336908Z'
1520344204.512 type=SEAT_ADDED : seat-id='Seat7' seat-kind=1
1520344204.514 type=SEAT_SESSION_ADDED : seat-id='Seat7' 
session-id='Session6' session-type='' session-x11-display='' 
session-x11-display-device='' session-display-device='/dev/pts/2' 
session-remote-host-name='fatty.de.regify.com' session-is-local=FALSE 
session-unix-user=1000 session-creation-time='2018-03-06T13:50:04.512161Z'
1520344204.519 type=SEAT_SESSION_REMOVED : seat-id='Seat7' 
session-id='Session6' session-type='' session-x11-display='' 
session-x11-display-device='' session-display-device='/dev/pts/2' 
session-remote-host-name='fatty.de.regify.com' session-is-local=FALSE 
session-unix-user=1000 session-creation-time='2018-03-06T13:50:04.512161Z'
1520344204.520 type=SEAT_REMOVED : seat-id='Seat7' seat-kind=1

*** /var/log/syslog ***
Mar  6 14:50:08 lindev /usr/bin/x2gostartagent: successfully started 
X2Go agent session with ID mario-56-1520344207_stDKDE_dp24
Mar  6 14:50:13 lindev console-kit-daemon[2143]: GLib-CRITICAL: Source 
ID 57 was not found when attempting to remove it

*** /var/log/auth.log ***
Mar  6 14:50:13 lindev sshd[5720]: Received disconnect from 
192.168.11.6: 11: Bye Bye
Mar  6 14:50:13 lindev sshd[5665]: pam_unix(sshd:session): session 
closed for user mario

*** /var/log/ConsoleKit/history ***
1520344213.470 type=SEAT_SESSION_REMOVED : seat-id='Seat6' 
session-id='Session5' session-type='' session-x11-display='' 
session-x11-display-device='' session-display-device='/dev/ssh' 
session-remote-host-name='fatty.de.regify.com' session-is-local=FALSE 
session-unix-user=1000 session-creation-time='2018-03-06T13:50:04.336908Z'
1520344213.470 type=SEAT_REMOVED : seat-id='Seat6' seat-kind=1


Somehow i believe this is system related to my box rather than 
packaging, but i somehow can't put my finger on it.
Anybody see anything i overlooked?

-- 
Mit freundlichen Grüßen/Kind regards

Mario Theodoridis

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