From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ville =?iso-8859-1?Q?P=E4tsi?= Subject: Re: Critical temperature even when idle with 2.6.7+patch, works fine in 2.4.26 Date: Fri, 2 Jul 2004 15:45:48 +0300 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20040702124548.GA13773@torni> References: <20040702094846.GB2141@torni> <20040702122725.GD16229@rap.rap.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Return-path: Content-Disposition: inline In-Reply-To: <20040702122725.GD16229-EittdKFJ/bZ/SzgSGea1oA@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Keld =?iso-8859-1?Q?J=F8rn?= Simonsen Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org These 1.8K bytes were from Keld Jørn Simonsen, > On Fri, Jul 02, 2004 at 12:48:47PM +0300, Ville Pätsi wrote: > > I have an Acer TravelMate 233xc laptop. The system cooling isn't handled > > by ACPI. The system works fine in 2.4.26 and with moderate fan speed > > (judged by the sound) the system stays at around 60 degrees celcius. > > > > When I boot into 2.6.7 (with the 2004-06-21 patch) the system starts to > > heat up, atlest judging from /proc/acpi/thermal_zone/THM0/temperature . > > The fan also gets faster. The system load is basically none (No X > > running). Then the system reports it has reached the critical > > temperature of 80 degrees and shuts down. > > If I try to start the machine too soon after it does an emergency > > shutdown (instant power off) while the kernel is loading, so I guess > > it's not a temperature measurement error. I don't have cpufreq running > > and /proc/cpuinfo reports 2.0GHz (which is the normal). > > I have the same problem on an Acer Travelmate 233 XC (same model). > The system gets really heated under kernel 2.6.7, while under 2.6.3 it > runs much cooler. Also I see from metering power consumption that > it seems like the CPU does not do idle looping. It does not reach 80 > degrees, but something like 65 degrees is common, while on 2.6.3 the > system stays about 48 degrees. I run X on the system, but the system is > quite idle. In 2.6.7 I looked at /proc/acpi/processor/CPU/power and saw that it was in mode C3 (which is supposed to be the least power consuming mode?). In 2.4 I've only seen it in C2. ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com