In additional, here you can see the installed nx packages: ii libnx-x11-6:i386 2:3.5.99.14-0~816~ubuntu16.04.1 i386 nxagent's libNX_X11 client-part library ii nx-x11-common 2:3.5.99.14-0~816~ubuntu16.04.1 all nx-X11 (common files) ii nxagent 2:3.5.99.14-0~816~ubuntu16.04.1 i386 Nested Xserver (aka NX Agent) supporting the NX compression protocol ii nxproxy 2:3.5.99.14-0~816~ubuntu16.04.1 i386 NX proxy
2018-03-06 19:09 GMT+01:00 Pongrácz István <pongracz.ist...@gmail.com>: > Hi, > > I use x2go successfully for several years and I very like it, thank you! > > I have a problem with the latest x2go (http://ppa.launchpad.net/ > x2go/stable/ubuntu xenial main). > I can login without problem to the server, working as expected, but when I > do not work on the x2go session (inactive or idle), the server closes the > connection and it is not possible to connect again. > Before the upgrade I had open sessions for days. > > Any idea? Below the technical details. > > *The client debug shows (short version):* > > x2go-DEBUG-../src/sshmasterconnection.cpp:2089> Forwarding parameters: from > remote ("localhost":49454) to local ("localhost":49788) > > x2go-DEBUG-../src/sshmasterconnection.cpp:2126> Temporary session port after > config file parse: 49454 > > x2go-DEBUG-../src/sshmasterconnection.cpp:2130> Temporary session host after > config file parse: localhost > > x2go-DEBUG-../src/sshmasterconnection.cpp:2160> New channel forwarded. > > x2go-DEBUG-../src/sshmasterconnection.cpp:2320> "ssh_channel_write failed": > "Remote channel is closed" > > x2go-DEBUG-../src/sshprocess.cpp:472> I/O error: "ssh_channel_write failed."" > - Remote channel is closed" (2). > > x2go-DEBUG-../src/sshmasterconnection.cpp:2363> EOF sent. > > x2go-DEBUG-../src/sshmasterconnection.cpp:2367> Channel closed. > > x2go-DEBUG-../src/onmainwindow.cpp:6459> Proxy wrote on stderr: "Loop: PANIC! > The remote NX proxy closed the connection. > > Error: The remote NX proxy closed the connection. > > " > > x2go-DEBUG-../src/onmainwindow.cpp:6459> Proxy wrote on stderr: "Loop: PANIC! > Failure negotiating the session in stage '7'. > > Error: Failure negotiating the session in stage '7'. > > Loop: PANIC! Wrong version or invalid session authentication cookie. > > Error: Wrong version or invalid session authentication cookie. > > > So, on the server side the port 49454 did not exist and even on the server > I can see the session running (with ps ax), it is not possible to connect > (The remote NX proxy closed the connection....)) > > I did not find fresh or relevant information on the net, I spent about 2 > days to figure out, but without success (purge, reinstall, xsession > removing etc. - all done, without results) > > *On the server, the sshd log contains this relevant information (it is the > pair of the client debug log above):* > > Mar 5 19:45:11 localhost sshd[19999]: Accepted publickey for xxxx from > YYYYY.98 port 43002 ssh2: RSA SHA256:notrelevant > > Mar 5 19:45:11 localhost sshd[19999]: pam_unix(sshd:session): session opened > for user username by (uid=0) > > Mar 5 19:45:11 localhost systemd-logind[787]: New session 9 of user username. > > Mar 5 19:45:22 localhost su[20438]: Successful su for username by root > > Mar 5 19:45:22 localhost su[20438]: + ??? root:username > > Mar 5 19:45:22 localhost su[20438]: pam_unix(su:session): session opened for > user username by (uid=0) > > Mar 5 19:45:22 localhost systemd-logind[787]: New session c1 of user > username. > > Mar 5 19:45:22 localhost su[20438]: pam_unix(su:session): session closed for > user username > > Mar 5 19:45:22 localhost su[20492]: Successful su for username by root > > Mar 5 19:45:22 localhost systemd-logind[787]: Removed session c1. > > Mar 5 19:45:22 localhost su[20492]: + ??? root:username > > Mar 5 19:45:22 localhost su[20492]: pam_unix(su:session): session opened for > user username by (uid=0) > > Mar 5 19:45:22 localhost systemd-logind[787]: New session c2 of user > username. > > Mar 5 19:45:24 localhost su[20492]: pam_unix(su:session): session closed for > user username > > Mar 5 19:45:24 localhost systemd-logind[787]: Removed session c2. > > Mar 5 19:45:25 localhost sshd[3615]: pam_unix(sshd:session): session closed > for user username > > Mar 5 19:45:29 localhost sshd[20011]: error: connect_to localhost port > 49454: failed. > > Mar 5 19:45:29 localhost sshd[20011]: channel_by_id: 0: bad id: channel free > > Mar 5 19:45:29 localhost sshd[20011]: Disconnecting: Received ieof for > nonexistent channel 0. > > Mar 5 19:45:29 localhost sshd[19999]: pam_unix(sshd:session): session closed > for user username > > Mar 5 19:45:29 localhost systemd-logind[787]: Removed session 9. > > > *The x2go server log from the syslog:* > Here is the session opened first time, successfully, you can see the agent > port (49454): > Mar 5 18:31:11 localhost /usr/bin/x2gostartagent: creating new session: > username-50-1520271069_stDMATE_dp24 2a3a4f78ebac6c1318558ebfebbffff1 3799 > YYYY.98 49454 49455 49456 -1 -1 > > In the syslog I did not find any related information about nxagent > closing, but only the unsuccessful reconnect after 1 hour and 14 minutes. > First reconnect, I was able to see the session selector window and I saw > the session as running state, but I had only Suspend and Terminate buttons > active. I pushed the suspend and resume, problem occurred. > > *Here are the packages on the server:* > > ii cups-x2go 3.0.1.3-1 > all Virtual X2Go printer for CUPS > > ii libx2go-log-perl 4.1.0.0-0~1517~ubuntu16.04.1 > all Perl X2Go::Log package > > ii libx2go-server-db-perl 4.1.0.0-0~1517~ubuntu16.04.1 > i386 Perl X2Go::Server:DB package > > ii libx2go-server-perl 4.1.0.0-0~1517~ubuntu16.04.1 > all Perl X2Go::Server package > > rc x2goagent > 2:3.5.0.33-0~710~ubuntu16.04.1 all X2Go agent > > rc x2godesktopsharing 3.1.1.4-0~186~ubuntu16.04.1 > i386 Share X11 desktops with other users via X2Go > > ii x2gomatebindings 0.0.1.5-0~203~ubuntu16.04.1 > i386 X2Go MATE bindings and MIME types > > ii x2goserver 4.1.0.0-0~1517~ubuntu16.04.1 > i386 X2Go server daemon scripts > > ii x2goserver-common 4.1.0.0-0~1517~ubuntu16.04.1 > i386 X2Go Server (common files) > > ii x2goserver-extensions 4.1.0.0-0~1517~ubuntu16.04.1 > all X2Go Server (extension support) > > ii x2goserver-printing 4.1.0.0-0~1517~ubuntu16.04.1 > all X2Go server (printing support) > > ii x2goserver-x2goagent 4.1.0.0-0~1517~ubuntu16.04.1 > all X2Go Server's X2Go Agent > > rc x2goserver-xsession 4.1.0.0-0~1517~ubuntu16.04.1 > all X2Go Server (Xsession runner) > > > *Here are the packages on the client:* > > ii cups-x2go 3.0.1.3-1 > all Virtual X2Go printer for CUPS > > rc x2goagent > 2:3.5.0.33-0~710~ubuntu16.04.1 all X2Go agent > > ii x2goclient > 4.1.1.1-0~1719~ubuntu16.04.1 amd64 X2Go Client > application (Qt4) > > rc x2gomatebindings > 0.0.1.5-0~203~ubuntu16.04.1 amd64 X2Go MATE > bindings and MIME types > > rc x2goserver > 4.0.1.22-0~1197~ubuntu16.04.1 amd64 X2Go server > daemon scripts > > rc x2goserver-printing > 4.0.1.22-0~1197~ubuntu16.04.1 all X2Go server > daemon scripts (printing) > > rc x2goserver-xsession > 4.0.1.22-0~1197~ubuntu16.04.1 all X2Go server > daemon scripts (Xsession runner) > > ii x2gousbmount > 1.1.0.2-0~469~ubuntu16.04.1 all clientside usb > mass-storage device mounting > > > -- Utálom a google-t. I hate google.
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