[ardour-users] ok... now what? jack problems

Josh Karnes jkarnes1 at austin.rr.com
Thu Mar 25 20:21:39 PST 2004


Well after much weeping and gnashing of teeth, I finally have Linux with Ardour 
working on my computer.  So far I can't figure out how to DO anything with 
Ardour yet but...

The real problem is that under fluxbox, when I try to run jack with the command 
"jackstart -d alsa -r 441000 -H", it returns an error:

  	jackstart: pcm.c:687: snd_pcm_nonblock: Assertion 'pcm' failed.

However, when I run it under gnome on the same machine, it works fine.

Any clues?  I'd like to try the fluxbox thing...

FWIW I've been running fluxbox all week trying it out on my other machine and it 
seems to be loads less stable than gnome/metacity.  I am not sure I can handle 
this crash-prone behavior with a DAW.

Now, if anyone can point me to a quick start primer on how to use Jack & Ardour, 
I'd appreciate it.  So far the docs are looking AWFULLY thin, particularly for 

What's it mean when it says "alsa_pcm: xrun of at least 0.040 msecs"?  It 
repeatedly says this after I start Jack...  but with different number of msec's.

[FWIW I'm running the latest planet ccrma patched kernel with alsa, low-latency 
patches etc. all from planet ccrma, all on a fresh and lean FC1 install.  tons 
of errors on startup.]
Josh Karnes


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