On Jul 14,  1:58pm, Lynn David Newton wrote:

> This is more of a general Unix question than Linux
> specific, although one of the three systems involved is
> a Linux system. The other two are FreeBSD.
> 
> The question: Now do I get my X environment to carry
> over when using ssh so that I can run X clients back
> across the net?
> 
> Details:
> 
> o I'm working on a Linux system from home. I have two
>   FreeBSD boxen that are work servers.
> 
> o When I ssh to one, $DISPLAY is set to something like
>   localhost:15.0. I don't know how that gets set, but
>   it works such that when I run an X client, it shows
>   up on my tube. It seems to change between logins. At
>   the moment it's set to localhost:18.0.
> 
> o When I ssh to the other server, $DISPLAY is unset,
>   and X clients do not work.
> 
> o I know about ssh -X host to enable X connection
>   forwarding. Calling it that way doesn't help.

Make sure that X11Forwarding is enabled in the server's sshd
configuration file.

Using the -v switch with ssh is often useful for debugging this
sort of problem.

Kevin