From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932567AbaEPTLW (ORCPT ); Fri, 16 May 2014 15:11:22 -0400 Received: from cantor2.suse.de ([195.135.220.15]:51136 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932203AbaEPTLV convert rfc822-to-8bit (ORCPT ); Fri, 16 May 2014 15:11:21 -0400 Date: Fri, 16 May 2014 21:11:17 +0200 From: Jean Delvare To: Pali =?ISO-8859-1?B?Um9o4XI=?= Cc: Guenter Roeck , linux-kernel@vger.kernel.org Subject: Re: Dell Latitude E6440 & i8k Message-ID: <20140516211117.0c766287@endymion.delvare> In-Reply-To: <201405162037.41782@pali> References: <201405162037.41782@pali> Organization: SUSE Linux X-Mailer: Claws Mail 3.9.3 (GTK+ 2.24.22; x86_64-suse-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Pali, On Fri, 16 May 2014 20:37:41 +0200, Pali Rohár wrote: > Hello, > > on Dell Latitude E6440 driver i8k reporting total nonsense values That's kind of excessive wording, the output isn't that bad. > $ sensors > i8k-virtual-0 > Adapter: Virtual device > Right Fan: 93450 RPM > CPU: +57.0°C > temp2: +57.0°C > temp3: +40.0°C > temp4: +127.0°C > > Right Fan and temp4 are for sure incorrect. Driver is reverse-engineered so this is best effort and some tweaking may be needed. > Value temp4 is always 127 and is never changing, but value for > Right Fan is increasing when fan is more noisy. So it looks like > value for Right Fan is not correctly normalized or multiplier is > incorrect. > > And name "Right" is incorrect too. Fan is on left side of this > notebook, not right as reported by driver. > > It is possible to fix these problems? Load the i8k driver with fan_mult=1. Add the following to /etc/sensors.d/i8k.conf: chip "i8k-virtual-0" label fan2 "Left Fan" ignore temp4 -- Jean Delvare SUSE L3 Support