On Wed, 2 May 2007, Martin Dieringer wrote:
On Wed, 2 May 2007, Ian Smith wrote:
On Wed, 2 May 2007, Martin Dieringer wrote:
> On Tue, 1 May 2007, Martin Dieringer wrote:
>
> > On Tue, 1 May 2007, Clayton Milos wrote:
> >
> >>> Hi,
> >>>
> >>> I get about half a second time offsets after 10 seconds, and more
> >>> than 100s after half an hour or so.
> >>> I think it has to do with powerd, if I kill that, the time stays
correct.
> >>> It happens both on a Compaq nc4000 and an IBM ThinkPad T42p laptop.
> >>>
> >>> Can this be solved?
> >>> thanks
> >>> m.
> >>
> >> This has got to do with the speed stepping of the CPU to save battery.
> >> Far as I know there's no fix yet.
> >>
> >> Guys is it possible to hack powerd to change a sysctl variable when it
> >> changes the CPU frequency or isn't it that simple?
> >
> >
> > Another effect of the problem seems to be the intermittent sound
> > output. Playback is ok when powerd is killed.
> > When changing freq by sysctl, I still get hickups in sound, so this
> > would be no solution.
>
> the hiccups have reappeared, so they are not related to powerd.
>
> I still have 0.5 seconds time offsets after 10 minutes, on the
> thinkpad, without powerd...
I'm wondering if this might have to do with power_profile's settings of
hw.acpi.cpu.cx_lowest when moving from AC to battery power?
I don't have these values, are they ACPI?
I switched off ACPI on both machines, but I use APM.
Might this have to do with it?
Now I got following while playing sound on the Compaq:
kernel: calcru: runtime went backwards from 183711700 usec to 183167434 usec
for pid 12 (swi4: clock sio)
here I have a working clock, but also intermittent sound output
m.
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