Re: [LAD] jack clicks with no xruns

Hi Paul,

>> Does anyone else get clicks which occur continuously after getting a
>> single xrun in jack? (i.e no further xruns are reported, but the audio
>> is
>> crackling).
>
> Dave, when I've seen this before its generally been a hardware issue,
> typically something stealing the PCI bus for too long. However, if the
> same thing doesn't happen with, say, aplay, then there is more
> investigation to be done. Step one would be to run aplay with the -v
> command, and then use the info to set up JACK with identical h/w
> parameters.

Ok, I have some better information now...

aplay works fine - no glitches
jack with the same parameters - testing with jack_metro to get my stuff
out of the loop, glitches.

This is on a ALC888 - which has surround support with 8 output channels
(which I don't actually need).

The glitches only happen when there is a signal - and sounds to me like
something is being set to 0 at the beginning/end of the buffer (the
frequency changes if I change the buffer size).

Cheers,

dave

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Received on Tue Sep 16 00:15:04 2008