Manual fan control on iBook G4?

[Justin Hibbits]

On Tue, 29 Jul 2014 13:36:19 +0700
Alexey Dokuchaev <danfe at nsu.ru> wrote:

> On Mon, Jul 28, 2014 at 10:01:14AM -0700, Nathan Whitehorn wrote:
> > On 07/28/14 09:16, Alexey Dokuchaev wrote:
> > >Again, seems you're correct:
> > >
> > >   dev.cpu.0.%desc: Open Firmware CPU
> > >   dev.cpu.0.%driver: cpu
> > >   dev.cpu.0.%pnpinfo: name=PowerPC,G4
> > >   dev.cpu.0.%parent: cpulist0
> > >   dev.cpu.0.freq: 533
> > >   dev.cpu.0.freq_levels: 1066/-1 533/-1
> > 
> > To be very explicit on this last point, doing sysctl
> > dev.cpu.0.freq=1066 (or enabling powerd) will give you your full 1
> > GHz.
> 
> Yes, it did.  I forgot that powerd(8) is actually not enabled by
> default. The question about fan controlling, however, remains.
> 
> ./danfe

The fan should be controlled automatically.  If you want manual control
you can set sysctl machdep.manage_fans=0 and manage the fans with
dev.adt746x.* . Since the machine doesn't get very warm, chances are you
may never hear them.

- Justin