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).

... and I'm seeing a lot of this:
JACK tmpdir identified as [/dev/shm]

I don't know if it's important?

cheers,

dave

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Received on Tue Sep 16 00:15:04 2008