I'm trying to use X Windows across an ssh connection.
It's an ssh connection I've used for a long time for normal terminal command line connections so I can ctually make the connection successfully with no problem.
To try and use X I've changed the command line from 'ssh -x <remote>' to 'ssh -X <remote>'.
The ssh man pages say that ssh will set the DISPLAY environment variable but it doesn't seem to do so, 'echo $DISPLAY' produces nothing.
What am I doing wrong?