From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Renninger Subject: Re: Unexpected shutdown - perhaps ACPI related? Date: Thu, 9 Oct 2008 15:03:51 +0200 Message-ID: <200810091503.51617.trenn@suse.de> References: <4b97db550810080302j79f9001la5a4c06019701131@mail.gmail.com> <4b97db550810090440j5815793ar7e09b3fd7a0b141c@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from mx1.suse.de ([195.135.220.2]:48054 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753170AbYJINDx (ORCPT ); Thu, 9 Oct 2008 09:03:53 -0400 In-Reply-To: <4b97db550810090440j5815793ar7e09b3fd7a0b141c@mail.gmail.com> Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Brian Schau Cc: Len Brown , linux-acpi@vger.kernel.org On Thursday 09 October 2008 13:40:36 Brian Schau wrote: > Hi, > > > Thomas' guess is a good one. See if this is thermal related. > > load your cpu with a copy of "cat /dev/zero > /dev/null > > for each core. Listen for fans to speed up, > > I did so for 10 minutes and the temperatur never rose beyond 72 deg C. > I also did some other work during that time. > I couldn't get it to shutdown ... > > BTW, the system is a dual core 2GHz system. > > > grep . /proc/acpi/thermal*/*/* /proc/acpi/fan/*/* > > root@stacy:~# grep . /proc/acpi/thermal*/*/* /proc/acpi/fan/*/* > /proc/acpi/thermal_zone/THRM/cooling_mode: > /proc/acpi/thermal_zone/THRM/polling_frequency: > /proc/acpi/thermal_zone/THRM/state:state: ok > /proc/acpi/thermal_zone/THRM/temperature:temperature: 73 C > /proc/acpi/thermal_zone/THRM/trip_points:critical (S5): 104 C > grep: /proc/acpi/fan/*/*: No such file or directory 73 C is beyond 72 C :) 104 sounds as if the HW would switch off before, could still be a thermal issue. Hmm, but the fans seem to be controlled by HW... > wrt.to the last line (grep error) - the 'fan' modules is loaded but > there are not > files present in the /proc/acpi/fan directory. > > Also, when I see the shutdowns it occurs as you described above - the > hardware shutdown. Means, the power just gets switched off? You should try to reproduce this easier somehow. Heavy battery/thermal reading, switching cpufreq up and down or something? How often does that happen? If it happens often you could try to exclude/not load ACPI drivers, cpufreq drivers. Switch off C-states. These are good candidates. Does this only happen with X? Maybe using another X driver (vesa fb) solves it? Did this machine ever worked fine with older kernels/distributions? Thomas