I've had horrible audio problems with Ubuntu since I got this laptop, an HP Pavilion dv7, about 8 months ago. I get audio dropouts and skips associated with ANY cpu usage. So, I'm now determined to fix it and get more control and ability to run more than one audio app at a time with realtime JACK.
I'm getting this when I try to start from qtjackctl ...
I have linux-rt and linux-headers-rt installed on a 64-bit fully updated Jaunty and I believe that my user has permissions ...
08:00:51.943 /usr/bin/jackd -R -dalsa -dhw:0 -r44100 -p64 -n2 -m
08:00:51.946 JACK was started with PID=5774.
no message buffer overruns
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.
cannot use real-time scheduling (FIFO at priority 10) [for thread -2120620304, from thread -2120620304] (1: Operation not permitted)
cannot create engine
anybody know what else I can try or look at to solve this?
root@lappy:~# cat /etc/security/limits.conf | grep @audio
@audio - rtprio 99
@audio - memlock unlimited
@audio - nice -19
root@lappy:~# cat /etc/group | grep audio