From mboxrd@z Thu Jan 1 00:00:00 1970 From: Florian Echtler Subject: Re: Fan running continuously after kernel switch Date: Fri, 16 Jan 2009 23:04:31 +0100 Message-ID: <1232143471.15602.24.camel@pancake> References: <1232008941.24218.6.camel@pancake> <1232011776.3989.25.camel@yakui_zhao.sh.intel.com> <1232011930.24218.13.camel@pancake> <1232088736.4001.6.camel@yakui_zhao.sh.intel.com> <20090116212326.GE5719@khazad-dum.debian.net> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from static.88-198-47-201.clients.your-server.de ([88.198.47.201]:59424 "EHLO butterbrot.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761567AbZAPWEe (ORCPT ); Fri, 16 Jan 2009 17:04:34 -0500 In-Reply-To: <20090116212326.GE5719@khazad-dum.debian.net> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Henrique de Moraes Holschuh Cc: Zhao Yakui , "linux-acpi@vger.kernel.org" > The thinkpad-acpi driver exports an interface that can be used to con= trol > the fan, but you do it on your own risk, and you have to EXPLICLTY op= t-in by > giving it the fan_control=3D1 parameter. Yes, I read about that option, but I'd rather like to avoid it.. > What can help is for you to tell us the temperatures that thinkpad-ac= pi > report. If any of them is above 43C, the fan will be left on continu= ously > by the EC. Here's the temperatures: cat /proc/acpi/ibm/thermal=20 temperatures: 43 37 35 45 50 -128 29 -128 37 46 43 -128 -128 -128 -128 -128 However, there's obviously a bit more to this. a) when I load the coretemp module and try to read the temperature via lm-sensors, I get two values around 60 =C2=B0C, while thinkpad-acpi sho= ws the above. Same applies to the standard ACPI thermal interface. I have a total of 13 different thermal measurements.. :-) b) the really weird part: when I remove the power supply and let the laptop run on battery, the fan immediately stops! Some minutes later, i= t starts again, but I'm pretty sure that the temperatures are not the onl= y factor here. When I plug the power cord back in after some minutes, the fan stops again.. Yours, Florian --=20 0666 - Filemode of the Beast -- 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