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From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Pierre Ossman <drzeus-list@drzeus.cx>
Cc: Alan Jenkins <alan-jenkins@tuffmail.co.uk>, linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH] cpuidle: avoid singing capacitors
Date: Wed, 05 Mar 2008 09:32:15 -0800	[thread overview]
Message-ID: <47CED91F.4020106@goop.org> (raw)
In-Reply-To: <20080301132924.0dc22b36@mjolnir.drzeus.cx>

Pierre Ossman wrote:
> On Fri, 29 Feb 2008 13:09:05 -0800 (PST)
> Alan Jenkins <alan-jenkins@tuffmail.co.uk> wrote:
>
>   
>> Pierre Ossman wrote:
>>     
>>> Many devices today are of a less than stellar quality, and singing
>>> transistors are a common problem. A high-pitch noise is created, caused
>>> by power fluctuations as the processor enters and leaves deep sleep at
>>> a high frequency.
>>>       
>> Capacitors or transistors?  The subject and the description disagree.
>>
>>     
>
> That should teach me to write commit messages when I'm tired... Capacitors is of course the right answer. :)

More likely inductors, I think.  The coils can vibrate against the coil 
if they haven't been properly potted in something.  Capacitors don't 
really have anything which can "sing".

    J

  reply	other threads:[~2008-03-05 17:37 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <a2itf-5jB-27@gated-at.bofh.it>
2008-02-29 21:09 ` Alan Jenkins
2008-03-01 12:29   ` Pierre Ossman
2008-03-05 17:32     ` Jeremy Fitzhardinge [this message]
2008-03-05 18:01       ` Pierre Ossman
2008-02-29 18:38 Pierre Ossman
2008-02-29 21:44 ` Lennart Sorensen
2008-03-01 12:31   ` Pierre Ossman
2008-03-01 13:40 ` Pierre Ossman
2008-03-02  2:27 ` Lee Revell
2008-03-02 14:17   ` Pierre Ossman
2008-03-03 12:36 ` Andi Kleen

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