Bug#1116: On Ubuntu 16: After sucessfull SSH connection established; X2Go session does not start
Package: x2goserver Version: 4.0.5.1 Severity: grave
Version client side: x2goclient 4.0.5.1 on Ubuntu 16 XFCE+ssh server Version server side: x2goversion delivers 4.0.1.20 on Ubuntu 16 XFCE desktop
After a fresh installation of x2go on the server and client side without special settings or problems I try to just get an xterm. I have the following severe problem:
Running x2goclient with --debug shows sucesfull SSH connection established. But after this the exec channel closes with "Have stderr only, something must be wrong."
In the GUI a message "Cannot open display "default display"" shows up
The message SSH finished: raw output (stdout): "setxkbmap -option ctrl:nocaps" could be a hint that some error processing during login does not work ??
Any idea how to debug ??
I attached the whole log
best regards
Stefan Auracher
$ x2goclient --debug x2go-INFO-1> "Starting X2Go Client..." x2go-WARNING-1> "English language requested, not loading translator." x2go-WARNING-1> "English language requested, not loading translator." x2go-INFO-3> "Started X2Go Client." x2go-DEBUG-../src/onmainwindow.cpp:513> "$HOME=/home/user" x2go-DEBUG-../src/onmainwindow.cpp:2202> Reading 1 sessions from config file. x2go-DEBUG-../src/sessionbutton.cpp:325> Creating QPixmap with session icon: ":/img/icons/128x128/x2gosession.png". x2go-DEBUG-../src/onmainwindow.cpp:2682> Creating QPixmap with session icon: '":/img/icons/128x128/x2gosession.png"'. x2go-DEBUG-../src/onmainwindow.cpp:2744> Starting session with key. x2go-INFO-8> "Starting connection to server: 192.168.188.10:22" x2go-DEBUG-../src/onmainwindow.cpp:2783> Starting new ssh connection to server:"192.168.188.10":"22" krbLogin: false x2go-DEBUG-../src/sshmasterconnection.cpp:173> SshMasterConnection, host "192.168.188.10"port 22user "user"useproxy falseproxyserver ""proxyport 22 x2go-DEBUG-../src/sshmasterconnection.cpp:210> Starting SSH connection without Kerberos authentication. x2go-DEBUG-../src/sshmasterconnection.cpp:214> SshMasterConnection, instance SshMasterConnection(0x563296cc0fa0) created. x2go-DEBUG-../src/sshmasterconnection.cpp:450> SshMasterConnection, instance SshMasterConnection(0x563296cc0fa0) entering thread. x2go-DEBUG-../src/sshmasterconnection.cpp:486> libssh not initialized yet. Initializing. x2go-DEBUG-../src/sshmasterconnection.cpp:797> cserverAuth x2go-DEBUG-../src/sshmasterconnection.cpp:812> state: 1
x2go-DEBUG-../src/sshmasterconnection.cpp:1065> Trying to authenticate user with private key.
x2go-DEBUG-../src/sshmasterconnection.cpp:1146> Authenticating with key: 0
x2go-DEBUG-../src/sshmasterconnection.cpp:662> User authentication OK. x2go-DEBUG-../src/onmainwindow.cpp:2878> SSH connection established. x2go-DEBUG-../src/onmainwindow.cpp:3160> Continue normal X2Go session x2go-DEBUG-../src/sshprocess.cpp:199> Executing remote command via SshProcess object 0: "export HOSTNAME && x2golistsessions" x2go-DEBUG-../src/sshprocess.cpp:204> this=SshProcess(0x563296da3e30) Running masterCon->addChannelConnection(this, ' "eff2bf61-7d95-48f0-b547-6f436ae59d1c" ', ' "bash -l -c 'echo "X2GODATABEGIN:eff2bf61-7d95-48f0-b547-6f436ae59d1c"; export PATH="/usr/local/bin:/usr/bin:/bin"; export TERM="dumb"; export HOSTNAME && x2golistsessions; echo "X2GODATAEND:eff2bf61-7" '); x2go-DEBUG-../src/sshmasterconnection.cpp:1312> Locking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:1314> Passing new channel conenction object to channelConnections. x2go-DEBUG-../src/sshmasterconnection.cpp:1316> Unlocking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:1504> Creating new channel.
x2go-DEBUG-../src/sshmasterconnection.cpp:1508> New channel:0x7f6818010e20
x2go-DEBUG-../src/sshmasterconnection.cpp:1539> Executing remote: "bash -l -c 'echo "X2GODATABEGIN:eff2bf61-7d95-48f0-b547-6f436ae59d1c"; export PATH="/usr/local/bin:/usr/bin:/bin"; export TERM="dumb"; export HOSTNAME && x2golistsessions; echo "X2GODATAEND:eff2bf61-7d95-48f0-b547-6f436ae59d1c";'"
x2go-DEBUG-../src/sshmasterconnection.cpp:1562> New exec channel created.
x2go-DEBUG-../src/sshmasterconnection.cpp:1666> EOF on channel 0x7f6818010e20; SshProcess object: 0 x2go-DEBUG-../src/sshmasterconnection.cpp:1734> EOF sent. x2go-DEBUG-../src/sshmasterconnection.cpp:1738> Channel closed. x2go-DEBUG-../src/sshprocess.cpp:517> SSH finished: raw output (stdout): "setxkbmap -option ctrl:nocaps X2GODATABEGIN:eff2bf61-7d95-48f0-b547-6f436ae59d1c X2GODATAEND:eff2bf61-7d95-48f0-b547-6f436ae59d1c " x2go-DEBUG-../src/sshprocess.cpp:523> Have stderr only, something must be wrong. x2go-DEBUG-../src/sshprocess.cpp:528> SSH finished: false - "Cannot open display "default display" " (0). x2go-DEBUG-../src/onmainwindow.cpp:3549> "Cannot open display "default display" " x2go-DEBUG-../src/onmainwindow.cpp:1557> Close event received.
x2go-DEBUG-../src/onmainwindow.cpp:1581> Quitting from tray icon and closing application.
x2go-INFO-6> "Closing X2Go Client ..." x2go-DEBUG-../src/onmainwindow.cpp:1410> Saving settings ... x2go-DEBUG-../src/onmainwindow.cpp:1419> Saved settings. x2go-DEBUG-../src/onmainwindow.cpp:1441> Waiting for the SSH connection to finish ... x2go-DEBUG-../src/sshmasterconnection.cpp:716> SshMasterConnection, instance SshMasterConnection(0x563296cc0fa0) waiting for thread to finish. x2go-DEBUG-../src/sshmasterconnection.cpp:1423> Disconnecting ...
x2go-DEBUG-../src/sshmasterconnection.cpp:1434> Deleting channel connections.
x2go-DEBUG-../src/sshmasterconnection.cpp:1442> Disconnecting session.
x2go-DEBUG-../src/sshmasterconnection.cpp:1448> Deleting sockets.
x2go-DEBUG-../src/sshmasterconnection.cpp:1455> All channels closed and session disconnected. Quiting session loop.
x2go-DEBUG-../src/sshmasterconnection.cpp:720> SshMasterConnection, instance SshMasterConnection(0x563296cc0fa0) thread finished. x2go-DEBUG-../src/sshprocess.cpp:52> SshProcess destructor called. x2go-DEBUG-../src/sshmasterconnection.cpp:727> SshMasterConnection, instance SshMasterConnection(0x563296cc0fa0) finished destructor. x2go-DEBUG-../src/onmainwindow.cpp:1443> SSH connection finished. x2go-DEBUG-../src/sshmasterconnection.cpp:744> libssh finalized. x2go-INFO-7> "Finished X2Go Client closing hooks." x2go-DEBUG-../src/onmainwindow.cpp:526> Destroying X2Go Client's main window. x2go-DEBUG-../src/onmainwindow.cpp:529> Finished destructor hooks for X2Go Client's main window. $
Hi,
Are you trying to connect as "root"? If so, you should absolutely not do this. Always use a regular user account and su or sudo afterwards.
Are you using a different default shell than /bin/bash?
Are you using some kind of central authentication (LDAP, AD) and/or a non-local /home directory, like, say, a NFS mount?
What happens when you try to log in using a newly created user with an "empty" home directory on the server?
Is there anything non-standard in
/etc/profile.d/* /etc/profile /etc/bash.bashrc ~/.profile ~/.bashrc
(For example, /root/.profile contains "mesg n" at its end, by default, while regular user accounts don't have that in their ~/.profile. This causes error messages - though usually different ones than the one you reported - when trying to connect as root, and results in a failed connection. Something similar might be going on here.)
Kind Regards, Stefan
Am 28.11.2016 um 20:24 schrieb auracher.stefan@web.de:
Package: x2goserver Version: 4.0.5.1 Severity: grave
Version client side: x2goclient 4.0.5.1 on Ubuntu 16 XFCE+ssh server Version server side: x2goversion delivers 4.0.1.20 on Ubuntu 16 XFCE desktop
After a fresh installation of x2go on the server and client side without special settings or problems I try to just get an xterm. I have the following severe problem:
Running x2goclient with --debug shows sucesfull SSH connection established. But after this the exec channel closes with "Have stderr only, something must be wrong."
In the GUI a message "Cannot open display "default display"" shows up
The message SSH finished: raw output (stdout): "setxkbmap -option ctrl:nocaps" could be a hint that some error processing during login does not work ??
Any idea how to debug ??
I attached the whole log
best regards
Stefan Auracher
$ x2goclient --debug x2go-INFO-1> "Starting X2Go Client..." x2go-WARNING-1> "English language requested, not loading translator." x2go-WARNING-1> "English language requested, not loading translator." x2go-INFO-3> "Started X2Go Client." x2go-DEBUG-../src/onmainwindow.cpp:513> "$HOME=/home/user" x2go-DEBUG-../src/onmainwindow.cpp:2202> Reading 1 sessions from config file. x2go-DEBUG-../src/sessionbutton.cpp:325> Creating QPixmap with session icon: ":/img/icons/128x128/x2gosession.png". x2go-DEBUG-../src/onmainwindow.cpp:2682> Creating QPixmap with session icon: '":/img/icons/128x128/x2gosession.png"'. x2go-DEBUG-../src/onmainwindow.cpp:2744> Starting session with key. x2go-INFO-8> "Starting connection to server: 192.168.188.10:22" x2go-DEBUG-../src/onmainwindow.cpp:2783> Starting new ssh connection to server:"192.168.188.10":"22" krbLogin: false x2go-DEBUG-../src/sshmasterconnection.cpp:173> SshMasterConnection, host "192.168.188.10"port 22user "user"useproxy falseproxyserver ""proxyport 22 x2go-DEBUG-../src/sshmasterconnection.cpp:210> Starting SSH connection without Kerberos authentication. x2go-DEBUG-../src/sshmasterconnection.cpp:214> SshMasterConnection, instance SshMasterConnection(0x563296cc0fa0) created. x2go-DEBUG-../src/sshmasterconnection.cpp:450> SshMasterConnection, instance SshMasterConnection(0x563296cc0fa0) entering thread. x2go-DEBUG-../src/sshmasterconnection.cpp:486> libssh not initialized yet. Initializing. x2go-DEBUG-../src/sshmasterconnection.cpp:797> cserverAuth x2go-DEBUG-../src/sshmasterconnection.cpp:812> state: 1
x2go-DEBUG-../src/sshmasterconnection.cpp:1065> Trying to authenticate user with private key.
x2go-DEBUG-../src/sshmasterconnection.cpp:1146> Authenticating with key: 0
x2go-DEBUG-../src/sshmasterconnection.cpp:662> User authentication OK. x2go-DEBUG-../src/onmainwindow.cpp:2878> SSH connection established. x2go-DEBUG-../src/onmainwindow.cpp:3160> Continue normal X2Go session x2go-DEBUG-../src/sshprocess.cpp:199> Executing remote command via SshProcess object 0: "export HOSTNAME && x2golistsessions" x2go-DEBUG-../src/sshprocess.cpp:204> this=SshProcess(0x563296da3e30) Running masterCon->addChannelConnection(this, ' "eff2bf61-7d95-48f0-b547-6f436ae59d1c" ', ' "bash -l -c 'echo "X2GODATABEGIN:eff2bf61-7d95-48f0-b547-6f436ae59d1c"; export PATH="/usr/local/bin:/usr/bin:/bin"; export TERM="dumb"; export HOSTNAME && x2golistsessions; echo "X2GODATAEND:eff2bf61-7" '); x2go-DEBUG-../src/sshmasterconnection.cpp:1312> Locking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:1314> Passing new channel conenction object to channelConnections. x2go-DEBUG-../src/sshmasterconnection.cpp:1316> Unlocking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:1504> Creating new channel.
x2go-DEBUG-../src/sshmasterconnection.cpp:1508> New channel:0x7f6818010e20
x2go-DEBUG-../src/sshmasterconnection.cpp:1539> Executing remote: "bash -l -c 'echo "X2GODATABEGIN:eff2bf61-7d95-48f0-b547-6f436ae59d1c"; export PATH="/usr/local/bin:/usr/bin:/bin"; export TERM="dumb"; export HOSTNAME && x2golistsessions; echo "X2GODATAEND:eff2bf61-7d95-48f0-b547-6f436ae59d1c";'"
x2go-DEBUG-../src/sshmasterconnection.cpp:1562> New exec channel created.
x2go-DEBUG-../src/sshmasterconnection.cpp:1666> EOF on channel 0x7f6818010e20; SshProcess object: 0 x2go-DEBUG-../src/sshmasterconnection.cpp:1734> EOF sent. x2go-DEBUG-../src/sshmasterconnection.cpp:1738> Channel closed. x2go-DEBUG-../src/sshprocess.cpp:517> SSH finished: raw output (stdout): "setxkbmap -option ctrl:nocaps X2GODATABEGIN:eff2bf61-7d95-48f0-b547-6f436ae59d1c X2GODATAEND:eff2bf61-7d95-48f0-b547-6f436ae59d1c " x2go-DEBUG-../src/sshprocess.cpp:523> Have stderr only, something must be wrong. x2go-DEBUG-../src/sshprocess.cpp:528> SSH finished: false - "Cannot open display "default display" " (0). x2go-DEBUG-../src/onmainwindow.cpp:3549> "Cannot open display "default display" " x2go-DEBUG-../src/onmainwindow.cpp:1557> Close event received.
x2go-DEBUG-../src/onmainwindow.cpp:1581> Quitting from tray icon and closing application.
x2go-INFO-6> "Closing X2Go Client ..." x2go-DEBUG-../src/onmainwindow.cpp:1410> Saving settings ... x2go-DEBUG-../src/onmainwindow.cpp:1419> Saved settings. x2go-DEBUG-../src/onmainwindow.cpp:1441> Waiting for the SSH connection to finish ... x2go-DEBUG-../src/sshmasterconnection.cpp:716> SshMasterConnection, instance SshMasterConnection(0x563296cc0fa0) waiting for thread to finish. x2go-DEBUG-../src/sshmasterconnection.cpp:1423> Disconnecting ...
x2go-DEBUG-../src/sshmasterconnection.cpp:1434> Deleting channel connections.
x2go-DEBUG-../src/sshmasterconnection.cpp:1442> Disconnecting session.
x2go-DEBUG-../src/sshmasterconnection.cpp:1448> Deleting sockets.
x2go-DEBUG-../src/sshmasterconnection.cpp:1455> All channels closed and session disconnected. Quiting session loop.
x2go-DEBUG-../src/sshmasterconnection.cpp:720> SshMasterConnection, instance SshMasterConnection(0x563296cc0fa0) thread finished. x2go-DEBUG-../src/sshprocess.cpp:52> SshProcess destructor called. x2go-DEBUG-../src/sshmasterconnection.cpp:727> SshMasterConnection, instance SshMasterConnection(0x563296cc0fa0) finished destructor. x2go-DEBUG-../src/onmainwindow.cpp:1443> SSH connection finished. x2go-DEBUG-../src/sshmasterconnection.cpp:744> libssh finalized. x2go-INFO-7> "Finished X2Go Client closing hooks." x2go-DEBUG-../src/onmainwindow.cpp:526> Destroying X2Go Client's main window. x2go-DEBUG-../src/onmainwindow.cpp:529> Finished destructor hooks for X2Go Client's main window. $
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tag -1 not-a-bug Bug #1116 [x2goserver] On Ubuntu 16: After sucessfull SSH connection established; X2Go session does not start Added tag(s) not-a-bug. severity -1 normal Bug #1116 [x2goserver] On Ubuntu 16: After sucessfull SSH connection established; X2Go session does not start Severity set to 'normal' from 'grave' close -1 Bug #1116 [x2goserver] On Ubuntu 16: After sucessfull SSH connection established; X2Go session does not start Marked Bug as done
-- 1116: http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1116 X2Go Bug Tracking System Contact owner@bugs.x2go.org with problems
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auracher.stefan＠web.de -
owner＠bugs.x2go.org -
Stefan Baur