From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763832Ab3ECVc5 (ORCPT ); Fri, 3 May 2013 17:32:57 -0400 Received: from mx2.3wh.net ([5.39.91.197]:55131 "EHLO mx2.3wh.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753960Ab3ECVc4 (ORCPT ); Fri, 3 May 2013 17:32:56 -0400 X-Greylist: delayed 439 seconds by postgrey-1.27 at vger.kernel.org; Fri, 03 May 2013 17:32:56 EDT Message-ID: <51842A5D.2070906@3wh.net> Date: Fri, 03 May 2013 21:21:33 +0000 From: Nick User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130403 Thunderbird/17.0.5 MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: Re: Fwd: PROBLEM: Random kernel panic & system freeze when watching video Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I experience a similar error on a Lenovo X201 notebook, maybe my information will help to identify the reason of the issue. My mcelog output is: MCE 0 CPU 2 BANK 2 TIME 1367614521 Fri May 3 20:55:21 2013 MCG status: MCi status: Uncorrected error Error enabled Processor context corrupt MCA: Internal parity error STATUS b200000000000005 MCGSTATUS 0 MCGCAP c09 APICID 4 SOCKETID 0 CPUID Vendor Intel Family 6 Model 37 The issue seem to be related to this particular model of notebook. The problem appears when starting Java applications and when a memory-hungry, but not a CPU-hungry Java process is launched. It never happened on simply a CPU-intensive task. The issue existed for a couple of years, but I didn't manage to get a MCE message before, it just hung. The same issue seems to exist with the same Lenovo model on a friend's notebook running Windows. At first I thought it is temperature related (as this Lenovo notebook seems some problems with fan control code), but it doesn't look like this. I set the fan to full speed manually, the error happens even when I'm in very cold environments, the notebook doesn't gets warm (subjectively), etc. I'm posting this just to point out that this looks like some serial manufacturing issue that people should beware of or develop some way of early detection. --- Previous message: Feb 13, 2013; 6:27pm On Wed, Feb 13, 2013 at 06:11:30PM +0000, Luck, Tony wrote: > > -- Panic DON'T happen when the laptop is running on battery. I've > > tried over 20 battery cycles (~40 hours) doing video playbacks and the > > computer never shut down. > > So my best guess is that you have a h/w problem aggravated by high temperatures. > When you are on battery the system will be saving power - which means less heat > dissipated by many components inside your laptop case. One thing we haven't asked is whether you still have the warranty on your hardware, and, if so, why not send it to the manufacturer so that they can take a look at it - they should be much better than us software guys and have the right tools for hardware inspection. Thanks. -- Regards/Gruss, Boris.