From: Fraz <fraz@unimail.com.au>
To: linux-kernel@vger.kernel.org
Subject: High pitched noise from laptop: processor.c in linux 2.6
Date: Thu, 07 Oct 2004 19:30:23 +1000 [thread overview]
Message-ID: <41650CAF.1040901@unimail.com.au> (raw)
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.
The laptop is a Compaq Evo N160 from Dec 2001. The reference in google
was to a Centrino laptop with the same problem. I wrote to Dominik
Brodowski who suggested posting here.
fraz
next reply other threads:[~2004-10-07 9:32 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-07 9:30 Fraz [this message]
2004-10-07 10:32 ` Pavel Machek
2004-10-07 10:53 ` Måns Rullgård
2004-10-07 14:32 ` Pavel Machek
2004-10-16 19:52 ` Lee Revell
2004-10-16 21:46 ` Alan Cox
2004-10-17 1:24 ` Lee Revell
2004-10-17 1:50 ` Kyle Moffett
2004-10-17 2:21 ` Alan Cox
2004-10-17 3:33 ` Lee Revell
2004-10-22 11:40 ` Alexandre Oliva
2004-10-16 19:59 ` Måns Rullgård
2004-10-16 20:42 ` Pavel Machek
2004-10-07 14:34 ` Pavel Machek
2004-10-17 0:45 ` Alex Riesen
2004-10-07 10:37 ` Christian Hesse
2004-10-17 5:21 Albert Cahalan
2004-10-18 3:51 Yu, Luming
2004-10-18 11:41 ` Pavel Machek
2004-10-20 14:47 ` Måns Rullgård
2004-10-20 15:47 ` Pavel Machek
2004-10-20 16:37 ` Måns Rullgård
2004-10-20 16:49 ` Jan-Benedict Glaw
2004-10-20 16:53 ` Pavel Machek
2004-10-20 16:53 ` Lee Revell
2004-10-20 17:13 ` Måns Rullgård
2004-10-21 20:32 ` Lee Revell
2004-10-21 21:39 ` Jon Masters
2004-10-20 23:31 ` Giuseppe Bilotta
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