I installed ubuntu intrepid on my thinkpad x200. It is mostly working but the graphics were big enough to annoy me.
I tried many xorg.conf configuration and this on worked perfectly for me to fix the screen resolution to wxga.
Section “Device”
Identifier “Configured Video Device”
Driver “intel”
Option “monitor-HDMI-1″ “HDMI-1″
Option “monitor-HDMI-2″ “HDMI-2″
EndSectionSection “Monitor”
Identifier “Configured Monitor”
EndSectionSection “Monitor”
Identifier “HDMI-1″
Option “Ignore” “True”
EndSectionSection “Monitor”
Identifier “HDMI-2″
Option “Ignore” “True”
EndSectionSection “Screen”
Identifier “Default Screen”
Monitor “Configured Monitor”
Device “Configured Video Device”
DefaultDepth 24
SubSection “Display”
Modes “1280×800″ “1024×768″
Virtual 2432 864
EndSubSection
EndSection