I was wondering if anyone could help me with a couple of issues regarding my installation.

Nr. 1: My screen always dims on loading, and it's absolutely awful.

Nr. 2: When I reboot, or shutdown, my screen gets scrambled and I usually have to press the power button to shut down.

However, if I log out first, then it shuts down fine.

My computer is a Lenovo Thinkpad SL400.

I'd be very grateful for any help anyone can give in this matter.

Cheers.