From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755263Ab2LSOg1 (ORCPT ); Wed, 19 Dec 2012 09:36:27 -0500 Received: from mx02.infracom.it ([62.196.48.11]:33582 "EHLO mx02.infracom.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751420Ab2LSOgV (ORCPT ); Wed, 19 Dec 2012 09:36:21 -0500 X-Greylist: delayed 324 seconds by postgrey-1.27 at vger.kernel.org; Wed, 19 Dec 2012 09:36:20 EST Message-ID: <50D1CF9D.2090709@infracom.it> Date: Wed, 19 Dec 2012 15:30:53 +0100 From: Roberto Oppedisano User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Zhang Rui CC: LKML , "Rafael J. Wysocki" , Subject: Re: regression in linux 3.7 - fan speed at 100% after suspend/resume at 100% References: <50BDF345.60804@gmail.com> <1354630272.2480.4.camel@rzhang1-mobl4> <50BEF830.6020206@gmail.com> In-Reply-To: <50BEF830.6020206@gmail.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, any news about this issue ? I'm still seeing the problem with the released 3.7 (and also with 3.7.1). Let me know if you need more info or testing. Kind regards R Il 05/12/2012 08:30, Roberto Oppedisano ha scritto: > Hello Rui > > Il 04/12/2012 15:11, Zhang Rui ha scritto: >> Hi, Roberto, >> >> please attach the acpidump output. > > attached. > >> On Tue, 2012-12-04 at 13:57 +0100, Roberto Oppedisano wrote: >>> Hello, >>> with recent kernels after a suspend/resume cycle on my laptop (HP >>> 6730b) the fans stays at full speed. >> does the fan keep running at full speed after resume? > > yes, the fan never stops and runs always at full speed. > > >> please attach the output of "grep . /sys/class/thermal/*/*" before >> suspend and when the fan is running at full speed. >> please attach the same stuff in a good kernel. > > See attached files. > 3.6.9 is the good kernel where the fan behaves correctly. > 3.7.0+git is the bad one. > > Kind regards > R > >> >> >> thanks, >> rui >> >> >>> I've bisected down to this commit: >>> >>> ce119f83257aae29b84a5bfad0669e8348437b18 is the first bad commit >>> commit ce119f83257aae29b84a5bfad0669e8348437b18 >>> Author: Zhang Rui >>> Date: Wed Jun 27 14:13:04 2012 +0800 >>> >>> Thermal: Introduce simple arbitrator for setting device >>> cooling state >>> >>> This fixes the problem that a cooling device may be referenced by >>> by multiple trip points in multiple thermal zones. >>> >>> With this patch, we have two stages for updating a thermal zone, >>> 1. check if a thermal_instance needs to be updated or not >>> 2. update the cooling device, based on the target cooling state >>> of all its instances. >>> >>> Note that, currently, the cooling device is set to the deepest >>> cooling state required. >>> >>> Signed-off-by: Zhang Rui >>> Reviewed-by: Rafael J. Wysocki >>> Reviewed-by: Eduardo Valentin >>> >>> :040000 040000 8469b057ee5b33bdb264624db35c951d0ecdb66b >>> d7288437cff3c7437e59144c46c04c78669a597b M drivers >>> :040000 040000 397296161d55c825f07501470130928d226497cc >>> f715fd1770dd33fd333c5fa339e740537b2a916f M include >>> >>> I tried to revert it but there are rejects so I cold not try current >>> kernel with simply this commit removed. >>> >>> As a side note when the fan is at full speed a see an anomaly on >>> thermal >>> indicator #4 >>> >>> $ grep 0 /sys/devices/virtual/thermal/thermal_zone*/temp >>> /sys/devices/virtual/thermal/thermal_zone0/temp:59000 >>> /sys/devices/virtual/thermal/thermal_zone1/temp:63000 >>> /sys/devices/virtual/thermal/thermal_zone2/temp:48000 >>> /sys/devices/virtual/thermal/thermal_zone3/temp:27900 >>> /sys/devices/virtual/thermal/thermal_zone4/temp:100000 >>> >>> while the others seem to report normal value. Attached the output of >>> dmesg on this laptop. >>> >>> More info/testing on request. >>> >>> Kind regards >>> R >> >> > -- Roberto Oppedisano Infracom Italia S.p.A. Ingegneria d'offerta Tel. +39 0459692691 Mob. +39 3487419534