From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Stefan Haller" Subject: Overheating Problem: Acer 1525WLMi Date: Mon, 06 Nov 2006 10:19:14 +0100 (CET) Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: Received: from aibo.runbox.com ([193.71.199.94]:63700 "EHLO aibo.runbox.com") by vger.kernel.org with ESMTP id S1161730AbWKFJTP convert rfc822-to-8bit (ORCPT ); Mon, 6 Nov 2006 04:19:15 -0500 Received: from [10.9.9.130] (helo=fenris.runbox.com) by greyhound.runbox.com with esmtp (Exim 4.34) id 1Gh0dO-0002zU-BF for linux-acpi@vger.kernel.org; Mon, 06 Nov 2006 10:19:14 +0100 Received: from mail by fenris.runbox.com with local (Exim 4.50) id 1Gh0dO-0003TM-9y for linux-acpi@vger.kernel.org; Mon, 06 Nov 2006 10:19:14 +0100 Content-Disposition: inline Received: from [62.202.214.58] by secure.runbox.com with http (uid:602948) (RMM 4.0); for ; Mon, 06 Nov 2006 09:19:14 GMT Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org Hi all I hope this is the right place to ask this. I have an overheating problem with my acer 1525WLMi notebook (AMD64) and experience frequent shutdowns due to "critical temperature (80C) reached". Interesstingly, this happens when the temperature of THRC reaches 90C, not 80C. I did not yet experience any such shutdowns under WIndows. According to BIOS info, I have version 1.11 from Phoenix, which is the latest available from acer for my notebook. Unlike others with this kind of notebook, I had no problems under Windows yet, though I use Windows only for gaming once in a while. I run Ubuntu Linux 6.10. Some info: sh@hermes:/proc/acpi/thermal_zone/THRC$ cat cooling_mode cooling mode: active sh@hermes:/proc/acpi/thermal_zone/THRC$ cat polling_frequency sh@hermes:/proc/acpi/thermal_zone/THRC$ cat state state: ok sh@hermes:/proc/acpi/thermal_zone/THRC$ cat temperature temperature: 52 C sh@hermes:/proc/acpi/thermal_zone/THRC$ cat trip_points critical (S5): 97 C passive: 90 C: tc1=2 tc2=5 tsp=300 devices=0xffff81001ff59270 There is a second thermal zone (THRS) which seems not to be a problem, since THRC temperature increases so fast when under load. sh@hermes:/proc/acpi$ cat processor/CPU0/info processor id: 0 acpi id: 0 bus mastering control: no power management: no throttling control: no limit interface: no sh@hermes:/proc/acpi$ ls -la fan total 0 dr-xr-xr-x 2 root root 0 2006-11-06 10:04 . dr-xr-xr-x 14 root root 0 2006-11-06 09:34 .. I tried to decrease trip_points with this command: echo -n "70:0:60:50:0" > /proc/acpi/thermal_zone/THRC/trip_points resulting in sh@hermes:/proc/acpi/thermal_zone/THRC$ cat trip_points critical (S5): 70 C passive: 60 C: tc1=2 tc2=5 tsp=300 devices=0xffff81001ff59270 The new settings had no noticable impact. The platform does not seem to support to many features. The fan is usually on and gets louder when system is under load, but I have the feeling, under Windows it increases to a higher speed when under load, though I could not say for sure. When I execute an endless loop program, the temperature THRC increases about 1 degree per 2-3 seconds and the system shuts down immediately after reaching 90C. The ventilator shaft seems not very dirty to me. Is there anything I could try out yet? What disturbs me, is that I do not seem to have the same problems in Windows. Thanks for your advice. With kind regards Stefan