xorg and thinkpad x40

[Xavier PESSOLES <Xavier.Pessoles@crans.org>]

Hi

I've tried to install the ubuntu version of xorg. All work very well.
I'have just a little problem : when I want to connect my laptop to a 
screen (or a videoprojector) with i810switch or an other method I have 
two kind of problems :	
	- either I have a white square in the left top corner of my screen, but 
the rest of the image is well
	- or I have all the screen but there are kinds of wave on the screen

Somebody can help me ?

thanks

--
Xavier PESSOLES