Public bug reported:
I had a proper configuration on jaunty (sshd_config) so I could ssh into
that machine and run X11 applications there with X11 forwarding, so I
could use apps fromt here remotely. After upgrade to karmic (same
sshd_config on the server, client is not changed) I got this (for
example):
xterm Xt error: Can't open display:
xterm: DISPLAY is not set
I've tried ssh -X, -Y and -X -Y too together with no success.
So DISPLAY environment variable is not even set because of some reason,
though I found this in /var/log/auth.log:
Sep 22 19:56:02 vega sshd[11206]: error: Failed to allocate internet-
domain X11 display socket.
openssh-server:
Installed: 1:5.1p1-6ubuntu1
Candidate: 1:5.1p1-6ubuntu1
Version table:
*** 1:5.1p1-6ubuntu1 0
500 http://archive.ubuntu.com karmic/main Packages
100 /var/lib/dpkg/status
xauth:
Installed: 1:1.0.3-2
Candidate: 1:1.0.3-2
Version table:
*** 1:1.0.3-2 0
500 http://archive.ubuntu.com karmic/main Packages
100 /var/lib/dpkg/status
sshd_config file:
Port 22
ListenAddress 0.0.0.0
Protocol 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
UsePrivilegeSeparation yes
KeyRegenerationInterval 3600
ServerKeyBits 768
SyslogFacility AUTH
LogLevel INFO
LoginGraceTime 600
StrictModes yes
RSAAuthentication yes
PubkeyAuthentication yes
IgnoreRhosts yes
RhostsRSAAuthentication no
HostbasedAuthentication no
PermitEmptyPasswords no
PasswordAuthentication no
X11Forwarding yes
X11DisplayOffset 10
PrintMotd no
PrintLastLog yes
TCPKeepAlive yes
Subsystem sftp /usr/lib/openssh/sftp-server
UsePAM yes
PermitTunnel yes
PermitRootLogin forced-commands-only
** Affects: openssh (Ubuntu)
Importance: Undecided
Status: New
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X11 forwarding via SSH does not work after upgrade to karmic
https://bugs.launchpad.net/bugs/434799
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