Ubuntu On Lenovo Thinkpad X201 (Blank Screen Problem)
Just got myself one of these and had a few problems getting Ubuntu to even boot from a USB stick on it. Although it sounded like everything was going smoothly the screen was blank for some reason.
A quick google about brought up this bug:
The solution to the problem is in comment #8 on there. Basically you need to use the following boot option to get the display working correctly
xforcevesa i915.modeset=0
Just stick this in at the bootloader and it should be fine. When Ubuntu is fully installed just put the same line into /etc/default/grub to make the change permanent.