[linux-audio-user] SB Extigy with Jack

Hi!

I'm using the Soundblaster Extigy USB-Soundcard and would like to get JACK
working.

AFAIK ALSA is working. But if I start qjackctl and after that ardour or
rosegarden4, the output is *really* noisy. I've attached the qjackctl output
messages and I'm using Debian/unstable with a compiled 2.6.14.3 kernel. I'd
like to provide you some more information, but I have no idea what the
problem is, so I don't know, what to post.

Thanks in advance to everyone who can help me...

Jakob Rohrhirsch

qjackctl output:

18:31:12.067 Patchbay deactivated.
18:31:12.106 Statistics reset.
18:31:12.165 Startup script...
18:31:12.165 artsshell -q terminate
18:31:12.181 MIDI connection graph change.
18:31:13.066 Startup script terminated with exit status=256.
18:31:13.107 JACK is starting...
18:31:13.108 /usr/bin/jackd -R -dalsa -dhw:0 -r44100 -p1024 -n2 -P -S
18:31:13.132 JACK was started with PID=5848 (0x16d8).
jackd 0.100.0
Copyright 2001-2005 Paul Davis and others.
jackd comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
JACK compiled with System V SHM support.
loading driver ..
apparent rate = 44100
creating alsa driver ... hw:0|-|1024|2|44100|0|0|nomon|swmeter|-|16bit
control device hw:0
configuring for 44100Hz, period = 1024 frames, buffer = 2 periods
nperiods = 2 for playback
cannot use real-time scheduling (FIFO at priority 20) [for thread -1228801104,
from thread -1228801104] (1: Operation not permitted)
cannot use real-time scheduling (FIFO at priority 10) [for thread -1237189712,
from thread -1237189712] (1: Operation not permitted)
18:31:13.334 MIDI connection change.
**** alsa_pcm: xrun of at least 32.720 msecs
18:31:15.400 Server configuration saved to "/home/jakob/.jackdrc".
18:31:15.402 Statistics reset.
18:31:15.514 Client activated.
18:31:15.514 Audio connection change.
18:31:15.517 Audio connection graph change.
subgraph starting at qjackctl-5845 timed out (subgraph_wait_fd=10, status = 0,
state = Triggered)
**** alsa_pcm: xrun of at least 25.410 msecs
cannot use real-time scheduling (FIFO at priority 9) [for thread -1225634896,
from thread -1225634896] (1: Die Operation ist nicht erlaubt)
18:31:15.592 XRUN callback (1).
18:31:35.818 XRUN callback (2).
delay of 26106.000 usecs exceeds estimated spare time of 21284.000;
restart ...
**** alsa_pcm: xrun of at least 16.877 msecs
18:31:35.901 XRUN callback (1 skipped).
Received on Sun Feb 26 20:16:57 2006