On 02/16/2011 08:27 PM, S. Massy wrote:
Hello, all, So, thanks to the excellent advice received on this list, I recently purchased a Roland UA25EX and it works just great, and out of the box at that. Also thanks to this list, I now have my RT kernel sorted out, lean and mean as ever. All great! With my (crappy) internal sound interface, I used to be able to leave jack running for days at "-p128" without any problem, at least with my new kernel. With my new USB soundcard, however, jack works flawlessly for a few hours and then abruptly exits saying something to the effect that jack timed out and the watchdog is doing its painful duty. Here is my jack command-line: $ jackd -P61 -t100 -d alsa -d hw:2,0 -p128 -r 44100 I tried adding "-v" for good measure and redirecting to a file, here's what it looks like before the downfall: -Couple 100K of boredom- [...] load = 0.2478 max usecs: 4.000, spare = 1447.000 load = 0.2273 max usecs: 3.000, spare = 1448.000 load = 0.2859 max usecs: 5.000, spare = 1446.000 (and then tonnes of) **** alsa_pcm: xrun of at least 0.029 msecs **** alsa_pcm: xrun of at least 0.025 msecs **** alsa_pcm: xrun of at least 0.026 msecs **** alsa_pcm: xrun of at least 0.024 msecs ---and so forth until jackd gets killed. Does anyone know what the problem could be? Is something wrong with my jackd command-line? Is there anything further I can do to debug? Cheers, S.M.
Hello, what distro are you using? And did you also check your system logs to see if anything happened around that time? And try using -n 3, I think JACK uses 2 by default for the ALSA backend and the man page recommends a setting of 3 for USB cards.
Best, Jeremy _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
