[Pm-utils] sometimes on resume, fan very loud until power off

[Peter Jones]

On Tue, 2006-11-28 at 13:43 -0500, Peter Jones wrote:
> On Mon, 2006-11-27 at 18:01 +0100, Holger Macht wrote:
> > On Mon 27. Nov - 11:51:15, Peter Jones wrote:
> > > On Mon, 2006-11-27 at 11:42 -0500, John H. wrote:
> > > > fc6
> > > 
> > > If you do:
> > > 
> > > cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
> > > 
> > > what does it say?  If it's "performance", do this (as root):
> > > 
> > > echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
> > > 
> > > which will bring the system back to normal within a few seconds,
> > > hopefully.  I'm not quite sure what's doing it, but sometimes it seems
> > > something is setting it to performance occasionally, particularly right
> > > after the system resumes.  I'm not sure what just yet.
> > 
> > I just wonder why this happens with suspend to ram. For hibernate, I know
> > the cause.

> > So not entirely related to this problem, on hibernation, all CPUs except
> > the first one is offlined. When coming back from suspend, they are onlined
> > again, but the default governor is performance. And 94cpufreq only resets
> > the governor for the suspend case. Peter, can you extend it to also reset
> > it on hibernate?
> 
> Oh, good point.  Will fix.

OK, we're both wrong.  Hibernate is the *only* place we do this, and we
do it for all CPUs.

So maybe John's problem indicates that we should be doing this on
suspend/resume as well.

-- 
  Peter