From mboxrd@z Thu Jan 1 00:00:00 1970 From: luksow@gmail.com (=?UTF-8?B?xYF1a2FzeiBTb3dh?=) Date: Mon, 27 Feb 2012 02:31:26 +0100 Subject: How to debug system freeze? In-Reply-To: References: <4F469917.6050503@gmail.com> <4F482899.8000501@gmail.com> Message-ID: <4F4ADCEE.4010209@gmail.com> To: kernelnewbies@lists.kernelnewbies.org List-Id: kernelnewbies.lists.kernelnewbies.org Thanks Mulyadi, > Hi Lukasz :) > > On Sat, Feb 25, 2012 at 07:17, ?ukasz Sowa 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