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    SubjectRe: [lm-sensors] Hardware running hot and without the fan
    On Thu, 3 Nov 2011 08:32:02 -0700, Guenter Roeck wrote:
    > On Thu, 2011-11-03 at 11:19 -0400, Lars Noodén wrote:
    > > I can set the fan speed manually. e.g.:
    > >
    > > echo 3500 > /sys/class/hwmon/hwmon0/device/fan1_output
    > >
    > > That helps some.
    > >
    > If you can do that, you should be able to set up fancontrol to
    > automatically control fan speed based on system temperatures.

    This won't work, as fancontrol wants pwmX attributes which the applesmc
    driver doesn't implement.

    > There is another sysfs attribute - fanX_manual. I don't find driver
    > documentation, so I have no idea what it is doing. The name indicates
    > that it might set manual vs. automatic fan control. What is it set to in
    > your system ? From the code, looks like it should be 0 or 1. Try to
    > toggle it and see what happens - after all, it can not get worse ;).

    Might be worth looking at files fanX_min, _max and _safe too. Too bad
    there doesn't seem to be any documentation available for all these
    non-standard attributes :(

    Jean Delvare
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