Messages in this thread | | | From | Måns Rullgård <> | Subject | Re: High pitched noise from laptop: processor.c in linux 2.6 | Date | Thu, 07 Oct 2004 12:53:00 +0200 |
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Pavel Machek <pavel@ucw.cz> writes:
> Hi! > >> I recently upgraded from linux 2.4.27 to 2.6.8.1 and noticed my laptop >> now makes a high pitch noise while idle. I traced it back to the >> processor module for acpi. 'rmmod processor' stops the noise. >> >> >> >> Using speed step to turn it down to 733 Mhz makes it a >> little quieter and doesn't change the tone. >> >> >> >> Is there any way to stop this? I googled around and found it had >> something to do with idle frequency of 1000 Hz in 2.6 instead of 100Hz >> in the 2.4 kernel. I couldn't find much else on this. Hunting around the >> code didn't help much, I don't know C. > > Change #define HZ 1000 to #define HZ 100...
... and lose all the benefits of HZ=1000. What would happen if one were to set HZ to a higher value, like 10000?
> Ouch and btw it is hardware problem -- too cheap capacitors. > Pavel > -- > Boycott Kodak -- for their patent abuse against Java.
Actually, I don't know which is worse, patent abuse or Java misuse.
-- Måns Rullgård mru@mru.ath.cx
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