[linux-audio-user] jackd -d alsa -d hw:0 -p512 / problem to start

[Tim Orford]

>    And the output is an infinite lines just like the following lines...
>    
>    **** alsa_pcm: xrun of at least 0.019 msecs
>    **** alsa_pcm: xrun of at least 0.051 msecs
>    **** alsa_pcm: xrun of at least 0.016 msecs
>    **** alsa_pcm: xrun of at least 0.015 msecs
>    **** alsa_pcm: xrun of at least 0.020 msecs
>    **** alsa_pcm: xrun of at least 0.014 msecs
>    **** alsa_pcm: xrun of at least 0.025 msecs
>    [...]

this sounds like what happens when alsa is not running properly.
You probably have, but have you tested alsa setup? (eg using alsaplayer or aplay)

cheers!

-- 
Tim Orford