Subject: Re: High pitched noise from laptop: processor.c in linux 2.6
From: Lee Revell <rlrevell@joe-job.com>
To: =?ISO-8859-1?Q?M=E5ns_Rullg=E5rd?= <mru@mru.ath.cx>
Cc: Pavel Machek <pavel@ucw.cz>, "Yu, Luming" <luming.yu@intel.com>,
       linux-kernel <linux-kernel@vger.kernel.org>
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On Wed, 2004-10-20 at 13:13, M?ns Rullg?rd wrote:
> > I bet you could actually identify the singing capacitor using a
> > telephone toner wand.  IMHO this is a bad enough problem to RMA it. 
> 
> Not really, it's barely noticeable in a quiet room.

If you had bought that laptop for audio use (big market these days, just
look at all the FireWire/USB/PCMCIA sound hardware out there), then this
would be a fatal problem.

Of course, for such a user, a BIOS where the hardware constantly block
interrupts via SMM would also be a fatal problem because it ruins audio
latency.  According to Alan Cox this is most laptops these days!

I am beginning to suspect the only known good laptop for pro audio use
is a Powerbook :-/.  x86 laptops are just too cheaply made.

Lee

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