From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754972Ab1KDK1h (ORCPT ); Fri, 4 Nov 2011 06:27:37 -0400 Received: from mail-fx0-f46.google.com ([209.85.161.46]:65346 "EHLO mail-fx0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752179Ab1KDK1g (ORCPT ); Fri, 4 Nov 2011 06:27:36 -0400 Message-ID: <4EB3BE15.3070009@gmail.com> Date: Fri, 04 Nov 2011 12:27:33 +0200 From: =?ISO-8859-1?Q?Lars_Nood=E9n?= User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:7.0.1) Gecko/20110929 Thunderbird/7.0.1 MIME-Version: 1.0 To: Henrik Rydberg CC: guenter.roeck@ericsson.com, "linux-kernel@vger.kernel.org" , "lm-sensors@lm-sensors.org" Subject: Re: Hardware running hot and without the fan References: <4EB1108F.6070009@gmail.com> <20111103020301.GA22333@ericsson.com> <4EB250FD.3070000@gmail.com> <20111103134902.GA26121@ericsson.com> <4EB2A46B.8080600@gmail.com> <1320332801.2309.60.camel@groeck-laptop> <4EB2B0FD.309@gmail.com> <20111103174635.GA12229@polaris.bitmath.org> In-Reply-To: <20111103174635.GA12229@polaris.bitmath.org> X-Enigmail-Version: 1.3.2 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 On 11/3/11 7:46 PM, Henrik Rydberg wrote: > On Thu, Nov 03, 2011 at 05:19:25PM +0200, Lars Noodén wrote: >> On 11/03/2011 05:06 PM, Guenter Roeck wrote: >>> On Thu, 2011-11-03 at 10:25 -0400, Lars Noodén wrote: >> [snip] >>>> The one machine reports one fan and the other two fans. I haven't found >>>> a way to set the fan speed manually. The output from sensors >>>> is >>>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/881593/comments/44 >>>> and here >>>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/881593/comments/47 >>> >>> Do the fans actually turn, or is the output bogus ? >> >> The output is bogus, the fans are not turning. On #47 there above, I >> think the temperatures might be inaccurate, too. Since they'll go up >> and down as much as 8 degrees in a few seconds. >> >>> You should be able to set the fan speed by writing into the fanX_input >>> and/or fanX_output sysfs attributes. You find those >>> in /sys/class/hwmon/hwmon0/device (assuming there is only one hwmon >>> device). >> >> I can set the fan speed manually. e.g.: >> >> echo 3500 > /sys/class/hwmon/hwmon0/device/fan1_output >> >> That helps some. > > I am confused. > > From what I gather, the fans work, and it should be possible to run > the macfanctld daemon (not fancontrol) to tune the fans. On the note book, one fan works with manual control only. If there is a second fan, it cannot be turned on manually. On the mini, there are no fan devices listed in /sys/class/hwmon/hwmon0/device/ > If there really is a problem with the applesmc, following > http://ubuntuforums.org/showthread.php?t=924096 is a good idea. > > However, the root problem is most likely the GPU consuming too much > power. Depending on the exact laptop model, there may or may not be a > viable workaround. If you model is very new, there is most likely and > active thread about it on the ubuntu forums. Not that I've been able to find and an attempt at starting a new thread has no response. > After checking around on the forums, if you find that this is still a > fan or temperature sensor problem, and not a GPU problem, then please > restate the problem as exactly as you can. I think there are two problems. One is the GPU or some other part running hot. The other is the sensors/fans issue: the fans don't turn on even when the system is hot. Both problems are evident on two different models of hardware, the notebook is a MacBookPro8,2 and the desktop is a Macmini3,1. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/881593 /Lars