> to narrow down this issue, please try these steps: > > 1 o enable loglevel=debug in /etc/x2go/x2goserver.conf, what do you see in > /var/log/messages? > 2 o use a Linux X2Go Client > 3 o use PyHoca-GUI or PyHoca-CLI as client application for X2Go on a Linux > machine (with --libdebug option on the cmdline) > 4 o btw. do you actually see the session window (for desktop sessions) > appear? (and then disappear?) > 5 o try ssh user@server -X nxagent :20 (does nxagent come up?) > > We have to find out, if your crash is an X2Go Server bug or an NX bug on > EPEL-7. > > Thanks+Greets, > Mike > 1- /var/log/message with debug loglevel on server after a try with a Windows client: Dec 11 21:24:42 centos7nightly systemd: Created slice user-1000.slice. Dec 11 21:24:42 centos7nightly systemd: Starting Session 3 of user jasminl. Dec 11 21:24:42 centos7nightly systemd: Started Session 3 of user jasminl. Dec 11 21:24:42 centos7nightly systemd-logind: New session 3 of user jasminl. Dec 11 21:24:45 centos7nightly systemd-logind: Removed session 3. 2- On a CentOS 7 machine, with x2goclient: x2go-INFO-1> "Starting x2goclient..." x2go-WARNING-1> "Can't load translator: :/x2goclient_en_us" x2go-WARNING-2> "Can't load translator: :/qt_en_US" x2go-INFO-3> "Started x2goclient." x2go-INFO-8> "Starting connection to server: 10.10.1.147:22" Segmentation fault (core dumped) 3-On a CentOs 7 machine, PyHoca-GUI rpm dependency boken with epel... requires notify-python, PyHoca-CLI installs successfully (will created another bug for that one..) so... Calling "pyhoca-cli --server 10.10.1.147 --libdebug -q lan --password mypass": Traceback (most recent call last): File "/usr/bin/pyhoca-cli", line 422, in thisPyHocaCLI.authenticate() File "/usr/lib/python2.7/site-packages/pyhoca/cli/frontend.py", line 455, in authenticate self._X2GoClient__connect_session(self.x2go_session_hash, username=_username, password=self.args.password, force_password_auth=force_password_auth) File "/usr/lib/python2.7/site-packages/x2go/client.py", line 1367, in connect_session sshproxy_force_password_auth=sshproxy_force_password_auth, File "/usr/lib/python2.7/site-packages/x2go/session.py", line 1355, in connect self.update_status() File "/usr/lib/python2.7/site-packages/x2go/session.py", line 1641, in update_status raise e x2go.x2go_exceptions.X2GoControlSessionException: x2golistsessions command failed after we have tried 20 times In the server's /var/log/message: Dec 11 22:05:33 centos7nightly systemd: Starting Session 14 of user jasminl. Dec 11 22:05:33 centos7nightly systemd-logind: New session 14 of user jasminl. Dec 11 22:05:33 centos7nightly systemd: Started Session 14 of user jasminl. Dec 11 22:05:33 centos7nightly /usr/bin/x2gofeaturelist: x2gofeaturelist called with options: Dec 11 22:06:00 centos7nightly systemd: Failed to mark scope session-14.scope as abandoned : Stale file handle Dec 11 22:06:00 centos7nightly systemd-logind: Removed session 14. While trying to run x2golistsessions on the server: DBIconnect('dbname=/var/x2go/x2go_sessions','',...)failed:unabletoopendatabasefileat/usr/share/perl5/vendor_perl/X2Go/Server/DB/SQLite3.pmline67. Could it be possible that the DB was never created / initialized during x2goserver's install process? or is it something else entirely? Am I using pyhoca-cli correctly? 4- No, I don't see the same behavior as with bug #675 5- Yes, if by nxagent you mean a black empty window with NX as the title. Thanks for the followups Jasmin