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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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