From: ross@lug.udel.edu
Date: Wed, 2 Feb 2005 01:05:05 -0500
To: Timothy Miller <theosib@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: ALSA HELP: Crackling and popping noises with via82xx
Message-ID: <20050202060505.GA18324@jose.lug.udel.edu>
References: <9871ee5f05020118343effed7@mail.gmail.com>
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On Tue, Feb 01, 2005 at 09:34:59PM -0500, Timothy Miller wrote:
> Basically, I get random poppling and crackling noises out of my
> speakers.  Sometimes it's silent, and sometimes, it crackles and pops
> for minutes at a time.  It's really disturbing, really, because it
> happens suddenly, sometimes very loudly, and usually when I'm
> concentrating.  :)

The few times I've used the via82xx on my mobo (ASUS KT400, forget the
model number), I've run into some applications that behave similarly.
I never got it randomly - it always happened when an app (ie, xmms)
would open the device and think it was in 44.1kHz when it was really
running at 48kHz.

I do music work on my box, so I've gotta stick with ALSA, but I've
found for common stuff the ALSA interfaces suck pretty bad - nothing
seems to know how to open the devices properly.  As a result, I mostly
use OSS emulation for non-music related things - Frank Barknecht has
info at http://alsa.opensrc.org/index.php?page=DmixPlugin on setting
this up.  Runing all my audio through that fixes the problem, since it
just resample everything to the running rate.

-- 
Ross Vandegrift
ross@lug.udel.edu

"The good Christian should beware of mathematicians, and all those who
make empty prophecies. The danger already exists that the mathematicians
have made a covenant with the devil to darken the spirit and to confine
man in the bonds of Hell."
	--St. Augustine, De Genesi ad Litteram, Book II, xviii, 37
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