xrandr

For some reasons after the latest ubuntu update xrandr just doesn't want to work. I don't know exactly why, but adding the following line to /etc/X11/xorg.conf solved the problem. Idea is from here.

Section "Device"
Identifier "Intel Corporation Mobile 945GM/GMS/940GML Express Inte$
Driver "i810"
BusID "PCI:0:2:0"
Option "RandRRotation" "true"
EndSection