[alsa-devel] Random inverted audio channels

Timur Tabi timur at freescale.com
Fri Feb 15 19:48:09 CET 2008

Alexandre BOUIN wrote:

> We have an issue : when we play a right channel stereo track, sound is
> played on right channel, but sometimes on left.
> This issue could happen right after starting kernel, or later after 10-20
> sounds played.

I've had a similar problem.  In my case, the clock from the codec to the chip 
was unstable.  When I attached a 5pF capacitor to it, the clock stabilized and 
the problem went away.

Try using a probe to validate the clock signal.

Timur Tabi
Linux kernel developer at Freescale

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