From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean Delvare Subject: Re: [lm-sensors] 3.13.?: Strange / dangerous fan policy... Date: Sat, 8 Mar 2014 12:08:31 +0100 Message-ID: <20140308120831.328e0179@endymion.delvare> References: <531A1EEE.9090101@netscape.net> <20140307205506.GA6870@roeck-us.net> <531A426D.6080100@netscape.net> <20140307225230.GA31135@roeck-us.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from cantor2.suse.de ([195.135.220.15]:60631 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751880AbaCHLIf convert rfc822-to-8bit (ORCPT ); Sat, 8 Mar 2014 06:08:35 -0500 In-Reply-To: <20140307225230.GA31135@roeck-us.net> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Manuel Krause Cc: Guenter Roeck , lm-sensors@lm-sensors.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org On Fri, 7 Mar 2014 14:52:30 -0800, Guenter Roeck wrote: > On Fri, Mar 07, 2014 at 11:04:29PM +0100, Manuel Krause wrote: > > Hi, and thanks for the quick response! > > No special fancy "fan control policy". 'fancontrol' isn't up or > > running. > > Vanilla kernels 3.11.* and 3.12.* had been working on here without > > any extra work. > > -- > > # sensors > > acpitz-virtual-0 > > Adapter: Virtual device > > temp1: +71.0=B0C (crit =3D +256.0=B0C) > > temp2: +69.0=B0C (crit =3D +110.0=B0C) > > temp3: +52.0=B0C (crit =3D +105.0=B0C) > > temp4: +25.0=B0C (crit =3D +110.0=B0C) > > temp5: +58.0=B0C (crit =3D +110.0=B0C) > >=20 > > coretemp-isa-0000 > > Adapter: ISA adapter > > Core 0: +62.0=B0C (high =3D +105.0=B0C, crit =3D +105.0=B0C) > > Core 1: +60.0=B0C (high =3D +105.0=B0C, crit =3D +105.0=B0C) > > -- > > My notebook (HP/Compaq 6730b) does not have a seperate fan sensor. > > This is with 3.12.13 with my normal workload. > >=20 > > Please, trust my above mentionned values of 94 =B0C vs. 74=B0C as I > > don't like to boot 3.13.6 anymore, to avoid harm to the notebook's > > casing. >=20 > Understood. Unfortunately, we'll need to get information > from the new kernel to be able to track down the problem. Indeed. Not only the run-time temperatures, but also the high and crit limits. > > But I'd do to test any improvement-patch. >=20 > So far I have no idea what is going on. I don't see anything in the > drivers providing above data that would explain the behavior, > but I might be missing something. Looks like a regression in the acpi subsystem or in power management, not hwmon. Hwmon is merely reporting the temperatures, it's not responsible for the actual temperatures. A bisection would certainly help, but of course that would require booting to a bad kernel half of the time, which I understand Manual wouldn't enjoy. The only two components which I think can reach such high temperatures in a laptop are the CPU and the GPU. I suppose that the "94 =B0C vs. 74=B0C" refers to acpitz's temp1? If the the temperatures reported by coretemp remain the same, then I can only suppose that temp1 is the GPU temperature. Please tell us which GPU is in this laptop, and which driver you're using. --=20 Jean Delvare SUSE L3 Support