My system doesn't shutdown properly. I have Ubuntu 12.10 64-bit installed on HP Pavilion DV7 with AMD Phenom quad-core and Radeon. I think the reason has to do with the display driver. I installed the ATI Catalyst proprietary Linux x86 and Linux x86_64 driver version 13.1 from 1/17/2013.
I was not able to make a screen shot, but here is a cam picture:
Can you help me, please?