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Date: Mon, 23 Aug 2004 14:43:18 +0300
From: Panagiotis Astithas <past@ebs.gr>
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To: Russell Jackson <rjackson@cserv62.csub.edu>
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cc: FreeBSD Current <freebsd-current@freebsd.org>
cc: Sean McNeil <sean@mcneil.com>
Subject: Re: [Fwd: sound in CURRENT]
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Russell Jackson wrote:

> To chime in on the sound issue, I get seemingly random distortions or
> screeches during playback. A sure fire way to cause it on demand is to
> do a sysctl -a. I've also found that taking the battery out and running
> on A/C only reduces the frequency of the distortions.
> 
> You may have gathered that this is a laptop based on the fact that it
> has a battery. Sound is provided by an Acer Labs M5451 using t4dwave driver.
> 
> On the other side of the spectrum, sound plays back perfectly on my
> workstation.

Just as a datapoint, ever since I added the following line to 
/boot/device.hints my sound experience has been greatly improved:

hint.pcm.0.buffersize="16384"