From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeffrey Merkey Subject: Re: Linux 2.6.34 causes system lockup on Compaq Presario 2200 Laptop Date: Fri, 11 Jun 2010 15:19:09 -0600 Message-ID: References: <20100529202253.0bd18bbd.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail-gy0-f174.google.com ([209.85.160.174]:39981 "EHLO mail-gy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754274Ab0FKVnK convert rfc822-to-8bit (ORCPT ); Fri, 11 Jun 2010 17:43:10 -0400 In-Reply-To: Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Len Brown , linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org On Fri, Jun 11, 2010 at 11:07 AM, Len Brown wrote: > On Fri, 11 Jun 2010, Jeffrey Merkey wrote: > >> Len, >> >> I am having trouble getting a trace of this because its down hard to >> reproduce. =A0The reason is the lockup happens before I log into the >> laptop. =A0i.e. I boot 2.6.34 and if I let the laptop just sit there= is >> happens. =A0If I log in and start doing work on it, it does not seem= to >> happen. =A0It's related to using the laptop on battery mode with the >> charger removed. =A0I have a 2U appliance setup I am working on toda= y >> and this frees up the laptop to try to reproduce this. =A0The flaky >> battery power misreporting was in fact accurate. =A0The battery in t= hat >> laptop is 6 years old and does have low power. =A0I am certain the >> lockup if related though. =A0I will try to reproduce today and setup= the >> trace to run after boot. =A0I have had it sitting there for an =A0ho= ur and >> it has not reoccurred. =A0Let me try through today and if I cannot >> reproduce, close the bug. > > Good to know, Jeff. > > One possibility is that the old battery is confusing > the embedded controller -- possibly exposing a firmware bug. > The EC, in turn, is fully capable of hanging the OS. > > If you *can* reproduce it, it may be interesting to bisect > recent changes to drivers/acpi/ec.c > > Also, if you can reproduce it, it would be good to verify > that the problem occurs only when the battery driver is loaded. > > thanks, > -Len > >> > Please attach the output of acpidump here: >> > >> > https://bugzilla.kernel.org/show_bug.cgi?id=3D16136 > > We could still use this output -- note that you can > capture it at any time, independent of the failure, > and independent of the kernel -- as it is simply > a copy of the tables that the BIOS is exporting to Linux. > > thanks, > -Len Brown, Intel Open Source Technology Center > I can tell you for certain it does only happen when the battery driver is loaded. Still has not ocurred. Just rebooted it 15 minutes ago -- trying again. Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html