System
Notebook Samsung P35, Pentium M 1.6Ghz, 2GB Ram, Radeon RV350 9700 mobility, running on Ubuntu 9.10. Using standard radeon driver.
1. Problem
xrandr won't let one use an external FullHD Monitor, thus add some new modes to it:
xrandr --newmode 1920x1200 154.00 1920 1968 2000 2080 1200 1203 1209 1235
xrandr --addmode VGA 1920x1200
2.