X over SSH not working?

Alan Lord alanslists at gmail.com
Thu Sep 27 08:02:56 PDT 2007

Hi all,

I need some help to point me in the right direction here:

I have built a home server based on LFS6.3 and some BLFS including 
xorg-7.2. All works fine and dandy on the local console.

My main desktop machine is Ubuntu 7.04. I can connect to "other" servers 
using ssh (such as the Debian Etch managed virtual machine that hosts 
all our web sites etc) and successfully run remote X applications on my 
Ubuntu desktop.

However, when I ssh into my new LFS/BLFS server I keep getting the 
dreaded "Error: Can't open display:".

I've checked the sshd_config for X11Forwarding and other pertinent 
settings, done lots of googling and found nothing that seems to point to 
the problem. In my Ubuntu environment $DISPLAY=:0.0. But, as I can get X 
sessions to work from other remote hosts I don't think it is a problem 
with the Ubuntu end...

Can anyone point me at some areas to investigate further?

Thanks as always.


The way out is open!

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