Bug Description

I cannot provide detailed log massages because laptop is bricked right now.

If you have courage to try it select UEFI boot from bios and than try to boot laptop using liveusb (made form Precise Pangolin 12.04.1 amd64).

Laptop hangs up in black screen. If you force power-off, after it, laptop wont start. I mean it not event start bios, just black screen no sounds nothing.

I filing this report, because i already bricked second laptop. At first i thought it was unrelated issue and laptop was fixed by warranty service (replaced motherboard), but after second time i quite sure.