Have you tried to used xrand?
In my case it was laptop with external LCD monitor throu DVI connector.
Or you can wait if Estuf will resurect xinerama



Edited 1 time(s). Last edit at 10/26/2010 01:21AM by gelo.

This is really interesting. I have tried to sent my first post as reply to one problem. could somebody from Forum admin explain me why this happens?

Open this link, and immediately you will see Red square with magic text

Dual monitor problem

i think this happened to me before, but I removed the u-distro word and it went through. Don't ask me why, though.