From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mircea Bardac Subject: acpi/sensors temperature on nx6325 Date: Mon, 11 Jun 2007 13:10:23 +0300 Message-ID: <200706111310.25351.dev.list@mircea.bardac.net> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from bravo.securenet-server.net ([207.210.84.244]:56670 "EHLO bravo.securenet-server.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758892AbXFKKNy convert rfc822-to-8bit (ORCPT ); Mon, 11 Jun 2007 06:13:54 -0400 Received: from [86.121.179.56] (helo=mircea.home.bardac.net) by bravo.securenet-server.net with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.66) (envelope-from ) id 1HxgsP-00020M-La for linux-acpi@vger.kernel.org; Mon, 11 Jun 2007 06:11:57 -0400 Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org Hi all, I'm currently running kernel 2.6.21.3 on a HP nx6325. I like having in the taskbar information about cpu/mem/temperature/etc.= I=20 found a strange behaviour monitoring the ACPI provided temperature. It=20 currently shows for example 48C constantly, for lots of minutes.=20 Doing a: dd if=3D/dev/urandom of=3D/dev/null increases the CPU usage an= d=20 temperature should increase too. The ACPI temperature stays the same th= ough. I have also loaded the lm_sensors modules which, after some monitoring,= appear=20 to be working right, meaning "it shows an increasing temperature if the= CPU=20 usage increases". # cat /proc/acpi/thermal_zone/TZ1/temperature && sensors temperature: 48 C k8temp-pci-00c3 Adapter: PCI adapter Core0 Temp: +54=B0C Core1 Temp: +53=B0C The ACPI temperature increases only when the trip-point is reached. I h= ear the=20 fans starting. When the fans stop, the temperature drops "hard" to the=20 previous value. I've changed the polling frequency to 1: # cat /proc/acpi/thermal_zone/TZ1/polling_frequency polling frequency: 1 seconds I got the same effect: I can't see the temperature change dynamically, = degree=20 by degree. Also, in a test, the sensor went up to 60-65C and the trip-p= oint=20 did't activate. This was with polling set to 1. If you need any more information, let me know. Regards, Mircea - To unsubscribe from this list: send the line "unsubscribe linux-acpi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html