How to debug system freeze?

[Łukasz Sowa]

Thanks Mulyadi,

> Hi Lukasz :)
> 
> On Sat, Feb 25, 2012 at 07:17, Łukasz Sowa <luksow at gmail.com> wrote:
>> It's not that easy. The problem occurs only when I'm going to suspend
>> with closing laptop's lid and it does not happen every time (but mostly
>> yes). I'll try to enable CONFIG_DETECT_SOFTLOCKUP but if it's hard
>> freeze, will I see the output?
> 
> not everytime...ok that makes situation harder. Maybe you need serial
> console and hook another computer to see the kernel log.
> 

I'll try to dump memory using FireWire because that's only useful port I
have in my laptop. Is that ok?

Regards,
Lukasz Sowa