Re: [Jack-Devel] ALSA PCM multi plugin and xruns

On Sun, Dec 09, 2012 at 10:51:30AM +0000, John Rigg wrote:
> On Sat, Dec 08, 2012 at 03:26:54PM -0600, Chris Caudle wrote:
> > I don't remember hearing other people talk about this interface before. 
> > Does the 3G version still use an Envy24 chip?
> > Are you absolutely sure that the synchronization is set up correctly so
> > that the cards are sharing word clock?  What you described sounds like
> > what might happen if the clock sync starts slipping between two cards and
> > they are not filling their buffers at a locked rate any more.
> 
> I see exactly the same symptoms with three ice1712 cards and pcm_multi.
> My cards are modified to use a common clock oscillator hard wired to all
> three cards, so there's no possibility of the clocks being unsynchronised.

Just to clarify, by "same symptoms" I mean numerous xrun messages from JACK
when there's nothing wrong with the audio. I haven't looked at what's
happening in the buffers.

John

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