> I was installed alsa + jackd, and jackd not start using this command > line: > > # jackd -d alsa -d hw:0 -p512 > > 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 Try running as root and with jackd -R -d alsa -d hw:0 -p 512 also try increasing -n 4 (6,8,10..), it might help for the xruns. But I'd say that running with realtime (-R) will do the job. > But jackd is 'running' but not usable, because 'ardour' abort saying: > > 'jackd not present' Remember to start ardour as the same user you start jackd. Tommi Uimonen