[alsa-devel] Random inverted audio channels

[Timur Tabi]

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