linux-kernel - Re: High pitch noise when ACPI processor module is loaded.

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Message-ID: <9883.1264397678@localhost>
Date:	Mon, 25 Jan 2010 00:34:38 -0500
From:	Valdis.Kletnieks@...edu
To:	Justin Piszcz <jpiszcz@...idpixels.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: High pitch noise when ACPI processor module is loaded.

On Sat, 23 Jan 2010 10:48:50 EST, Justin Piszcz said:
> Hi,
> 
> Linux:
> When I do not load the ACPI processor module, there is no high pitch 
> noise.  When I load the ACPI processor module (so I can utilize Turbo 
> Boost), Linux makes the system emit a high pitch noise.

Sounds like singing capacitors.

http://lwn.net/Articles/145973/ - and see the last 2 comments.

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