An help to find hard lock cause

[EmIScA]

Have you tried using a live cd?  Does it freeze with it? You can also 
try to run memstest86 to see if your ram is damaged.......

Pierpaolo Follia ha scritto:
> Hi guys. I need an help to find why my laptop (a Sony Vaio PCG-K195HP,
> Intel P4 2.8Ghz) is hard locking at least once per day.
> I can't find any information in logs...or maybe I don't know how to 
> read them.
> My laptop simply freeze: I can't move mouse and keyboard doesn't 
> respond too.
> I tryed to disable powernowd ('cause I heard that was causing hard
> locks for someone) but nothing.
> I also tryed to disable DRI for my video card (ATI Radeon IGP345M). 
> Nothing.
> I tryed with vesa driver...and the system crashed after 2 minutes of 
> usage!
>
> Could anyone of you help me finding a way to resolve this problem?
> Where have I to look?
>
> I am Ubuntu addicted....I can't go back to Windows, and I don't think
> that changing linux distro will resolve my problem.
>
> Thank you very much
>