Re: HP/Compaq NC6120 ACPI problems

[Kristoffer Sjoberg <kristoffer.sjoberg-lzmg0B5VUhvLoDKTGw+V6w@public.gmane.org>]

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On tor, 2005-03-17 at 21:56 +0100, Andrej Prsa wrote:
> Hi,
> 
> > > The symptoms are as follows: computer starts fine, but within 20-30
> > > seconds it gradually slows down to the point where it can no longer
> > > be used - it takes 5 minutes to start the terminal. The fan doesn't
> > > work, so the machine overheats. Using 'top' shows that 55% of CPU
> > > power is consumed by kacpid.
> > 
> > Take a look at /proc/interrupts a couple times, and see if there's
> > a device that's spewing interrupts.
> 
> Observational update: it does *NOT* gradually slow down, it slows down
> *instantly* after 2-3 minutes of running; the time of kacpid blowup is
> somewhat arbitrary, it sometimes happens even before the boot-up is
> complete. If I was to make another wild guess, it might be connected
> with the fan - when the computer is cool, the blowup occurs later, if it
> is warm, it occurs sooner. Is it possible that the call to turn the fan
> on is triggering this kacpid blowup? How does one go about to test this?
> 
> For the first time I was now running 'top' from the moment a computer
> came up to the moment kacpid boosted CPU consumption. Another erratum:
> it is not 55% of CPU power for kacpid, it is 98%-99% of CPU power
> reported in 'top'.

Hi,

I have a very similar problem on my NC6000, but only after resume from
S4 (swsusp2 2.1.8.2). It simply won't turn on the fan, and after a while
running 'yes' in a terminal, everything comes to a halt until I abort
the scrolling. Running 2.6.11.2 - I think that 2.6.11-rc1 worked fine
though (although it had a few other problems).


BR

Kristoffer Sjöberg

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