[linux-audio-user] Jack drops out and no realtime

[Vaughan Famularo]

Hi all

can someone try and help me please??? i am running Fedora Core 3 and the
ccrma system of programs
This is the message that I get when I try to start jack in realtime via
the qjackctl. It just always fails. I am using the ccrma 2.6-11 kernel
and kernel source and "think" i have installed everything correctly. 
After reading this jack output please continue down the email as there
is  more from when I run just jackd

16:13:47.917 artsshell -q terminate
16:13:48.136 Startup script terminated with exit status=256.
16:13:48.136 JACK is starting...
16:13:48.136 jackd-realtime -R -u -dalsa -ddefault -r44100 -p128 -n4 -i8
-o8 -H
16:13:48.139 Could not start JACK. Sorry.
16:13:52.055 JACK was stopped successfully.
16:14:14.360 Startup script...
16:14:14.361 artsshell -q terminate
16:14:14.579 Startup script terminated with exit status=256.
16:14:14.579 JACK is starting...
16:14:14.579 jackd-realtime -u -dalsa -ddefault -r44100 -p128 -n4 -i8
-o8 -H
16:14:14.582 Could not start JACK. Sorry.
16:14:16.545 JACK was stopped successfully.

The only way to run jack is to do it not in realtime but it drops out
now and then with Ardour and jamin. This is the message that I get when
it's running!

delay of 4450.000 usecs exceeds estimated spare time of 407.000;
restart ...
delay of 4450.000 usecs exceeds estimated spare time of 407.000;
restart ...
delay of 10707.000 usecs exceeds estimated spare time of 407.000;
restart ...
delay of 2424.000 usecs exceeds estimated spare time of 407.000;
restart ...
delay of 2424.000 usecs exceeds estimated spare time of 407.000;
restart ...
delay of 792.000 usecs exceeds estimated spare time of 407.000;
restart ...
**** alsa_pcm: xrun of at least 0.017 msecs
delay of 4909.000 usecs exceeds estimated spare time of 407.000;
restart ...
delay of 4909.000 usecs exceeds estimated spare time of 407.000;
restart ...
delay of 11562.000 usecs exceeds estimated spare time of 407.000;
restart ...
**** alsa_pcm: xrun of at least 0.017 msecs
delay of 3278.000 usecs exceeds estimated spare time of 407.000;
restart ...
delay of 3278.000 usecs exceeds estimated spare time of 407.000;
restart ...
could not complete playback of 128 frames: error = -32
cycle execution failure, exiting
DRIVER NT: could not run driver cycle