Manual fan control on iBook G4?

[Britt Dodd]

On Linux, there's a module called pmu_battery that you have to load in
order to get things working like the battery life (and percentage), fan
control, etc. I presume that it would be similar in BSD.


On Mon, Jul 28, 2014 at 11:35 AM, Alexey Dokuchaev <danfe at nsu.ru> wrote:

> Hi there,
>
> I've digged out that old pity iBook G4 of mine (should be something like
> PowerBook6,5 I guess) that had been hanging under Tiger within few minutes
> after boot and installed FreeBSD on it.  Surprisingly, it works fine under
> it. :)
>
> I'm suspecting either a faulty harddrive, or non-working fan.  So far no
> matter what heavy port I build, fan does not kick it.  Does FreeBSD support
> fan control on this baby?  How can I manually engage it to see if it works?
> (I've tested that power line has +5V, but don't know how can I PWM control
> it from command line.  Is it PWM, in fact? -- just guessing since there are
> four wires coming into it.)
>
> Another weird thing: CPU frequency per dmesg(8) is strangely low:
>
>   $ grep cpu0 /var/run/dmesg.boot
>   cpu0: Motorola PowerPC 7447A revision 1.1, 535.22 MHz
>   cpu0: Features 9c000000<PPC32,ALTIVEC,FPU,MMU>
>
> while per various websites, 7447A CPU on it should clock at at least 1GHz.
>
> Any clues?  How can I read Mac model from NVRAM (akin to what Mac OS X
> provides via `hw.model' sysctl, or something like that)?  Thanks.
>
> ./danfe
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