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
next prev parent 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 ` [RFC][PATCH] cpuidle: avoid singing capacitors 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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