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SubjectRe: Hardware running hot and without the fan
On 11/03/2011 03:49 PM, Guenter Roeck wrote:
> On Thu, Nov 03, 2011 at 04:29:49AM -0400, Lars Noodén wrote:
>> On 11/03/2011 04:03 AM, Guenter Roeck wrote:
>>> From LKML:
>>> On Wed, Nov 02, 2011 at 05:42:39AM -0400, Lars Noodén wrote:
>>>> There seem to be two problems here, one is that the hardware is
>>>> getting WAY too hot, another is that the fan is not turning on when
>>>> the hardware gets too hot.
>>>> $ uname -a Linux xubuntu 3.1.0-999-generic #201110270406 SMP Thu
>>>> Oct 27 08:07:41 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
>>>> I've reported the problem to Ubuntu
>>>> and the
>>>> suggestion there was to report it upstream.
>>>> On the notebook computer, parts become very hot to the touch while
>>>> running Ubuntu, but the fan does not run even after it gets hot.
>>>> When I boot back to OS X, the fan kicks in and runs until the
>>>> computer returns to being cool to the touch. Similar for the
>>>> desktop, though I must follow the temperature with
>>>> /usr/bin/sensors.
>>>> The notebook is a MacBookPro8,2 and the desktop is a Macmini3,1
>>>> What metrics do I need to collect to help fix the problem? I've
>>>> already reported the problem to Ubuntu[2] and the recommendation
>>>> was to try reporting upstream.
>>>> Please CC me in the replies. /Lars
>>>> [1]
>>>> [2]
>>> I see applesmc: : read arg fail in the dmesg log. No idea what that
>>> means. Maybe the driver maintainer or someone else on the lm-sensors
>>> mailing list can help.
>>> Not sure I understand your comment about having to follow the output
>>> of the sensors command. Can you clarify ?
>> That's to track the temperature manually.
>>> Also, do you get any output from the sensors command on the notebook?
>>> Thanks, Guenter
>> Yes. It claims to have 24 temperature sensors.
> Does it report any fans ? If it does, can you try setting the fan speed ?

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
and here

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