I'm running Ubuntu 10.04 (10.10's Nouveau didn't play well with my nv 8600M GT).
I have an external monitor connected through HDMI.
I've set up the monitor as Twinview, positioned it absolute (a little above my laptopscreen) and made my laptopscreen primary.
The problem is that my laptop screen now adapts to my other screen's size and now I have an off-screen band above my laptopscreen and an off-screen band below my external monitor.
How can I fix this?