[X2Go-User] x2goserver on Ubuntu 17.04 Zesty

[Robert Kudyba]

>>    I have not been successful at getting x2go to work consistently on
>> machines I have upgraded to Ubuntu 17.04, oddly it works on some and not
>> others.  I have two machines on which it appears to work fine and two which it does not, one of those it just gives me a black screen and the other it
>> immediately exits.  On the machine that it immediately exits it prints some
>> error messages but the client exits too fast to read them.  I can't figure
>> out if and where x2go logs erros.  I do see some things in the syslog but
>> indicates it is starting the session successfully when obviously it is not.

Have you seen this page on how to enable debug logging? http://wiki.x2go.org/doku.php/wiki:development:debugging <http://wiki.x2go.org/doku.php/wiki:development:debugging>
Other logging locations apart from the system's log are:

X2Go Server: /var/log/syslog
X2Go Client: stderr (use –debug)
PyHoca-GUI: stderr (use –libdebug –debug)
Xsession itself: $HOME/.xsession-x2go-errors
NX (server-side): $HOME/.x2go/C-<sessionid>/session.*
NX (client-side): $HOME/.x2go/S-<sessionid>/session.*
The default log levels for x2goserver and cups-x2go are set to notice. Available log levels are: emerg, crit, alert, err, warning, notice, info, debug.
The x2goserver log level can be set by editing:

root at x2goserver:~$ editor /etc/x2go/x2goserver.conf
Debugging X2Go Session Broker

The x2gobroker debug mode can be enabled in:

root at broker:~$ editor /etc/default/python-x2gobroker
The log files normally get written to /var/log/x2gobroker/*.log

You can also run

root at broker:~$ x2gobroker-daemon-debug
as user root. This is equivalent to running the broker daemon provided by the package x2gobroker-daemon, but you will see all output piped to stderr while the X2Go Session Broker daemon runs in foreground mode.
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