I have three Debian 6.0.x machines, two virtual. The third, dragon, runs
XFCE. I can log into the third machine, but cannot get X to work.
$DISPLAY is not set for root or for a regular user.
On the local machine, the user's .ssh/config has:
host dragon
Protocol 2
ForwardX11 yes
ForwardX11Trusted yes
The identical stanza works for a Ubuntu 10.04 machine.
On dragon, /etc/ssh/sshd_config has:
root@dragon:~# grep -i forward /etc/ssh/sshd_config
#AllowTcpForwarding yes
#X11Forwarding no
X11Forwarding yes
root@dragon:~#
xauth is present.
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