At Wed, 18 Jan 2006 22:50:36 -0600,
Joel Bison wrote:
> 
> Hi, all--
> 
> I'm having some interesting trouble getting dmix to work properly with
> snd-cs46xx, using the 1.0.10rc1 bundled with 2.6.14.3 kernel.  If I
> run two instances of "alsaplayer -o alsa -d plug:dmix file.mp3", they
> both appear to run properly (e.g., time and progress meters increase),
> but no sound is produced.  Using dmix via asound.conf behaves
> similarly.  Alsaplayer plays fine when allowed to have exclusive
> access to the sound device (i.e., with no "-d plug:dmix"), but a
> second such instance blocks until the first exits.
> 
> A subquestion here is: why is concurrency not working automatically,
> without "-d plug:dmix"?  I read that my >= 1.0.9rc2 ALSA defaults to
> using dmix for non-hardware-mixing soundcards, which includes my
> CS4624-based Cirrus Logic soundcard (as per the soundcard matrix).  Is
> that maybe the real problem, with the explicit dmix just confusing
> things?

cs46xx doesn't require dmix as long as you compile with CS46XX_NEW_DSP
option.  It supports h/w mixing.


Takashi


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