From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261244AbVFOCDI (ORCPT ); Tue, 14 Jun 2005 22:03:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261479AbVFOCDI (ORCPT ); Tue, 14 Jun 2005 22:03:08 -0400 Received: from adsl-216-102-91-59.dsl.snfc21.pacbell.net ([216.102.91.59]:7569 "EHLO nasledov.com") by vger.kernel.org with ESMTP id S261244AbVFOCDC (ORCPT ); Tue, 14 Jun 2005 22:03:02 -0400 Date: Tue, 14 Jun 2005 19:03:01 -0700 To: William D Waddington Cc: linux-kernel@vger.kernel.org Subject: Re: 2.6.9 & 11 hang on ac/dc change with T43 Message-ID: <20050615020301.GA14136@nasledov.com> References: <429130FF.2040804@beezmo.com> <20050614191110.GA8835@nasledov.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050614191110.GA8835@nasledov.com> User-Agent: Mutt/1.5.9i From: Misha Nasledov Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org So I've done some further experiments and apparently this bug goes away when ACPI is enabled in the kernel. This is a temporary fix though.. On Tue, Jun 14, 2005 at 12:11:10PM -0700, Misha Nasledov wrote: > I am having this same exact problem! I'm running 2.6.11.12 on my ThinkPad > T43 which I just got yesterday. I discovered last night then when I > change the power state in any way, it'll give these ATA abnormal status > 0xD0 on port 0x1F7 errors. > > So I began doing some sleuthing.. Bill said that this only happens with > APM, so I tried it without APM. First I booted with noapm, but I found > that my system was still trying to use the apm kernel module when apmd > started. So, I removed apm from the kernel and uninstalled apmd. An > interesting side effect that I noted here was that once apmd was > uninstalled it generated some sort of power-change event that triggered > this bug. > > So I booted with a new kernel without any APM support and tried changing > the power state -- no luck. Same errors. Fortunately I haven't experienced > severe filesystem corruption quite yet, but I have a feeling that if I keep > experimenting long enough, it will be inevitable. > > So this is a pretty grave bug. Everytime I want to unplug my laptop or plug > it back in, I have to shut it down first. I'm not sure what kernel version > this bug was introduced in -- I might try building 2.6.8 and see how that > works. > > I believe that there are two more things I can try; Bill mentioned this > problem not happening in ACPI mode. I thought that by this he meant that > the problem disappeared in absence of APM, but perhaps this problem > might disappear in presence of ACPI. Well, I'll try this, but I'd prefer > to have working APM on this machine for suspend. > > Maybe disabling the BIOS power-saving mechanisms and solely relying on > Linux kernel to handle CPU throttling and such might do it, but I have > my doubts. > > Has anyone else had this problem? Anyone look into it? It seems that Bill > posted this a while ago and has received no reply on the list. -- Misha Nasledov misha@nasledov.com GPG: A063 B99A 2BD3 2D48 F2D7 8E68 0F27 4D21 948F 8F06