From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422874AbWJPTkH (ORCPT ); Mon, 16 Oct 2006 15:40:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1422881AbWJPTkH (ORCPT ); Mon, 16 Oct 2006 15:40:07 -0400 Received: from dev.mellanox.co.il ([194.90.237.44]:21894 "EHLO dev.mellanox.co.il") by vger.kernel.org with ESMTP id S1422874AbWJPTkE (ORCPT ); Mon, 16 Oct 2006 15:40:04 -0400 Date: Mon, 16 Oct 2006 21:39:25 +0200 From: "Michael S. Tsirkin" To: Adrian Bunk Cc: Pavel Machek , Linux Kernel Mailing List , len.brown@intel.com, linux-acpi@vger.kernel.org, linux-pm@osdl.org, Jeff Garzik Subject: Re: x60 backlight Re: [discuss] 2.6.19-rc1: known regressions (v2) Message-ID: <20061016193925.GA20009@mellanox.co.il> Reply-To: "Michael S. Tsirkin" References: <20061008193005.GJ6755@stusta.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20061008193005.GJ6755@stusta.de> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Quoting r. Adrian Bunk : > Subject: Re: x60 backlight Re: [discuss] 2.6.19-rc1: known regressions (v2) > > On Sun, Oct 08, 2006 at 07:59:58PM +0200, Michael S. Tsirkin wrote: > > Quoting r. Adrian Bunk : > > > Subject: Re: x60 backlight Re: [discuss] 2.6.19-rc1: known regressions (v2) > > > > > > On Sun, Oct 08, 2006 at 07:12:54AM +0000, Pavel Machek wrote: > > > > > > > > On Sat 07-10-06 23:46:21, Adrian Bunk wrote: > > > > > This email lists some known regressions in 2.6.19-rc1 compared to 2.6.18 > > > > > that are not yet fixed Linus' tree. > > > > > > > > > ... > > > > > Subject : T60 stops triggering any ACPI events > > > > > References : http://lkml.org/lkml/2006/10/4/425 > > > > > Submitter : "Michael S. Tsirkin" > > > > > Status : unknown > > > > This was on a pre -rc1 git tree. > > I've been using -rc1 since it's out and does not happen to me anymore. > > So we probably can write this off as a memory corruption > > issue that got fixed in between. > > Thanks for the information, I've removed it from the list. Unfortunately, this came back after using 2.6.19-rc1 for a couple of days without reboot. And I just re-tested and was able to re-produce the problem on 2.6.19-rc2, as well. So the problem is still there, with the same symptoms: after usig machine for a while, or under stress (e.g. if I do a full kernel compile), I stop getting any ACPI events. tail -f /var/log/acpid does not show anything, even on Fn/F4 which is supposed ot be always enabled. Restarting the acpid doesn't do anything either - ACPI starts working again, for a while, only after reboot. Worked fine under 2.6.18 (I was running vanilla + this patch http://lkml.org/lkml/2006/7/20/56 which made it into upstream since then). Any ideas? How to debug this? -- MST