laptop fan control via FreeBSD

Xavier xavierfreebsdquestions at gmail.com
Sat Jan 19 17:50:26 UTC 2013


On Sat, Jan 19, 2013 at 05:07:07PM +0100, Fabian Keil wrote:

Hi Fabian,

> Xavier <xavierfreebsdquestions at gmail.com> wrote:
>
> > On Sat, Jan 19, 2013 at 03:13:58PM +0100, Fabian Keil wrote:
> >
> > Hi Fabian,
> >
> > > Xavier <xavierfreebsdquestions at gmail.com> wrote:
> > >
> > > > Is there any way to control the on and off the fan on a laptop using FreeBSD?
> > >
> > > It depends on the laptop. On mine it works:
> > >
> > > fk at r500 ~ $sysctl -ad | grep fan
> > > dev.acpi_ibm.0.fan_speed: Fan speed
> > > dev.acpi_ibm.0.fan_level: Fan level
> > > dev.acpi_ibm.0.fan: Fan enable
> > >
> >
> > My output of 'sysctl -ad | grep fan' don't show these parameters. Why ?
> > Because, my BIOS don't support these aparameters ? Another answer ?
>
> acpi_ibm(4) is a kernel module that isn't loaded by default.
>
> Depending on your hardware you may have to kldload a different
> module. You could try:
>
> ls /boot/kernel/acpi_*.ko

Yes, but I hace an acer ...

Thanks, see you.


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