From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761145AbZBMTez (ORCPT ); Fri, 13 Feb 2009 14:34:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752608AbZBMTej (ORCPT ); Fri, 13 Feb 2009 14:34:39 -0500 Received: from smtprelay01.ispgateway.de ([80.67.18.13]:43614 "EHLO smtprelay01.ispgateway.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752724AbZBMTeh (ORCPT ); Fri, 13 Feb 2009 14:34:37 -0500 References: Message-ID: X-Mailer: http://www.courier-mta.org/cone/ From: Peter Feuerer To: Thomas Renninger Cc: linux-kernel@vger.kernel.org Subject: Re: Acer Aspire One fan control Date: Fri, 13 Feb 2009 20:34:40 +0100 Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset="US-ASCII" Content-Disposition: inline Content-Transfer-Encoding: 7bit X-Df-Sender: 404094 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Thomas Renninger writes: > > Does it help if you do: > echo 10 >/proc/acpi/thermal_zone/*/polling_frequency Actually there is nothing in /proc/acpi/thermal_zone/. So it seems for me, that there is no driver which handles the temperature and the fan of the Acer Aspire One yet. A search on google didn't disprove it. That's why I started to write my own kernel module. But I tested it only with 2.6.28.4. Maybe there's already something in 2.6.29, not sure about it. > If the fan is controlled via thermal ACPI trip points, maybe latest kernel > versions do help? There were several commits lately in this area, e.g.: > 676962dac6e267ce7c13f73962208f9124a084bb > f5adfaa372c76423b6e8e4727a9701330374f364 Those patches have been applied to 2.6.28. > The latter adds a boot param you could give a try if you think it's worth it: > ACPI: Add "acpi.power_nocheck=1" to disable power state check in power > transition I will try the acpi.power_nocheck option, but google results on that don't sound very promising. --peter