From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Clifton Subject: Re: HP Compaq nc6320 - Booting on battery power causes softlock Date: Wed, 17 Jan 2007 14:21:59 +0000 Message-ID: <1169043719.6273.8.camel@localhost> References: <1169002596.29755.5.camel@localhost> <3877989d0701161904u6ef2b931t99b79d92dd974f2a@mail.gmail.com> <200701162215.34627.lenb@kernel.org> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from ppsw-7.csi.cam.ac.uk ([131.111.8.137]:57792 "EHLO ppsw-7.csi.cam.ac.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932323AbXAQOWW (ORCPT ); Wed, 17 Jan 2007 09:22:22 -0500 In-Reply-To: <200701162215.34627.lenb@kernel.org> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Len Brown Cc: Luming Yu , linux-acpi@vger.kernel.org On Tue, 2007-01-16 at 22:15 -0500, Len Brown wrote: > try also "apm=off" -- since the ACPI/APM dependency checking > is currently broken in some configs. > > On Tuesday 16 January 2007 22:04, Luming Yu wrote: > > The first thing is to make sure you are running the latest bios, kernel. > > Then, you need to sort out the kernel component/modules/drivers that > > cause the problem. > > If you guess it is ACPI issue, pleas test boot option acpi=off to see > > if the problem goes away. If you guess it is battery issue, please > > remove battery module, etc. > > Please don't forget to enter a bug in bugzilla.kernel.org. > > > > Thanks, > > Luming Ok, I've tested acpi=off and apm=off with the stock Ubuntu kernel. It didn't softlock with either, but I'll try to use one of the two when booting now to ensure it is consistent. with acpi=off, there was a backtrace printed from an unloved IRQ11, and the sound card wasn't particularly happy. These HP laptops seem very picky - perhaps I should buy an IBM next time for linux! I've filed a bug, #7840, http://bugzilla.kernel.org/show_bug.cgi?id=7840 It is under ACPI/Other. Attached to that bug is dmesg output from the normal AC boot, and battery boots with acpi=off, api=off, also an acpidump output from the normal AC boot. I will check the bios, and vanilla kernel tests when I get chance. Unfortunately, it seems quite hard to get a kernel config which exactly matches a stock Ubuntu one (for keeping as few variables changed as possible). I can recompile a kernel source deb for Ubuntu quite happily, but it produces a huge number of versions, and takes many many hours (brings me back to using linux on a [34]86 :)) Thanks for your input Luming, Len. Regards, Peter Clifton