[alsa-devel] Clicking and stuttering audio when playing two or more files

Mark Brown broonie at opensource.wolfsonmicro.com
Mon Jul 19 10:59:37 CEST 2010

On Thu, Jul 15, 2010 at 01:21:47PM -0400, Adam Rosenberg wrote:
> I have audio output perfectly from my second CS42448 CODEC now, but
> only when one file is playing.  When I attempt to play two files, one
> or both of the files play with clicking and stuttering.  I am also

Clicks and stutters usually mean that you're not managing to keep the
data flowing into the audio controller quickly enough to keep it from

> noticing that the PCM prepare operation is occurring more than once.
> What could be causing this problem?

I'd expect prepare to be called for each data stream.

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