[linux-audio-user] Cannot get qjackctl, jackd, alsa working.

[Patrick Shirkey]

David Froseth wrote:
> I am trying to get jackd, qjackctl, and alsa working on a pentium d 
> desktop running ubuntu edgy.  I am getting these error messages when I 
> start qjackctl:
> 
> ..........
> 
> ALSA: final selected sample format for capture: 32bit little-endian
> ALSA: use 2 periods for capture
> ALSA: final selected sample format for playback: 32bit little-endian
> ALSA: use 2 periods for playback
> 12:38:49.469 Could not connect to JACK server as client. Please check 
> the messages window for more info.
> **** alsa_pcm: xrun of at least 0.024 msecs
> **** alsa_pcm: xrun of at least 0.012 msecs
> 12:38:57.669 MIDI connection change.
> **** alsa_pcm: xrun of at least 0.534 msecs
> 12:38:58.077 Could not connect to JACK server as client. Please check 
> the messages window for more info.
> **** alsa_pcm: xrun of at least 0.124 msecs
> **** alsa_pcm: xrun of at least 2.709 msecs
> 12:39:01.196 JACK is stopping...
> **** alsa_pcm: xrun of at least 2.769 msecs
> jack main caught signal 15
> no message buffer overruns
> 12:39:01.333 JACK was stopped successfully.
> 
> Any ideas on how to fix this?
> 

There are a few possibilities.

- How are you starting the jack server and which user - root or normal?

- Is this the output from the qjackctrl error window or the command line?


-- 
Patrick Shirkey - Boost Hardware Ltd.
Http://www.boosthardware.com
Http://lau.linuxaudio.org - The Linux Audio Users guide
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