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SubjectRe: Hardware running hot and without the fan
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
> >> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/881593 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] http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/current/
> >>
> >> [2] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/881593
> >
> > 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 ?

Thanks,
Guenter

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