[LAU] no realtime priority possible with wdm/openbox

[Atte Andrê Jensen]

Hi

I have a cpu-hog problem with my debian/lenny and someone suggested it 
might be caused by gnome. So I installed wdm (instead of gdm) and 
openbox to completely bypass any gnome stuff.

However when I log in from wdm to openbox I cannot start jack with 
realtime priority, I get this in the messages window of qjackctl:

15:45:00.693 Patchbay deactivated.
15:45:00.695 Statistics reset.
15:45:00.705 JACK is starting...
15:45:00.706 /usr/bin/jackd -R -P80 -dalsa -dhw:1 -r44100 -p256 -n3 -s
15:45:00.723 ALSA connection graph change.
jackd 0.109.2
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 
-1209067856, from thread -1209067856] (1: Operation not permitted)
cannot create engine
15:45:00.750 JACK was started with PID=14293.
15:45:00.763 JACK was stopped successfully.
15:45:00.763 Post-shutdown script...
15:45:00.764 killall jackd
15:45:00.909 ALSA connection change.
jackd: no process killed
15:45:01.170 Post-shutdown script terminated with exit status=256.
15:45:02.913 Could not connect to JACK server as client. - Overall 
operation failed. - Unable to connect to server. Please check the 
messages window for more info.

Esp the "cannot use real-time scheduling (FIFO at priority 10) [for 
thread -1209067856, from thread -1209067856] (1: Operation not 
permitted)" seems to nail the problem.

What should I do to make it possible to start jack with realtime 
priorities and why does it have anything to do with gnome? I've been 
using this combo (wdm/openbox) in the past with no problem...

-- 
Atte

http://atte.dk    http://modlys.dk