Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757888AbZCYB3z (ORCPT ); Tue, 24 Mar 2009 21:29:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757697AbZCYB3b (ORCPT ); Tue, 24 Mar 2009 21:29:31 -0400 Received: from out2.smtp.messagingengine.com ([66.111.4.26]:41147 "EHLO out2.smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757504AbZCYB3a (ORCPT ); Tue, 24 Mar 2009 21:29:30 -0400 X-Sasl-enc: a84o8GUoR2TIkQERb3mgmJWoMl9hsa9DhnooDtcFUq8Y 1237944567 Date: Tue, 24 Mar 2009 22:29:25 -0300 From: Henrique de Moraes Holschuh To: "Renato S. Yamane" Cc: LKML , jnelson@jamponi.net Subject: Re: Thinkpad T61 - Fan running a lot of time Message-ID: <20090325012925.GA30554@khazad-dum.debian.net> References: <49C94620.8040309@diamondcut.com.br> <20090324232328.GA23356@khazad-dum.debian.net> <49C98280.4020402@diamondcut.com.br> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <49C98280.4020402@diamondcut.com.br> X-GPG-Fingerprint: 1024D/1CDB0FE3 5422 5C61 F6B7 06FB 7E04 3738 EE25 DE3F 1CDB 0FE3 User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 957 Lines: 23 On Tue, 24 Mar 2009, Renato S. Yamane wrote: > # echo level 7 > /proc/acpi/ibm/fan > bash: echo: write error: Invalid argument > > How can I change fan level? Read the driver documentation, at Documentation/laptops/thinkpad-acpi.txt. Fan control is locked by default, for hardware safety reasons. The docs tell you why, how to use the fan control interface, and how to unlock it. Also, I suggest you get used to the hwmon fan control interface on /sys, procfs is going away sooner or later... -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/