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Old 02-04-2006, 06:00 PM   #1
Registered: Mar 2004
Location: midwest
Distribution: Mandriva 2007
Posts: 83

Rep: Reputation: 15
jack and rosegarden

I cannot get rosegarden to play. In the configuration it states that there is no audio output, that the jack server is not running but when I try and start the server with any of the following commands
jackd -R -v -d alsa -d hw:0
jackd -R -d alsa -d hw:0
jackd -d alsa -p 4096 -n 3

I get errors and segmentation faults. Where do I go now?

Old 02-04-2006, 08:37 PM   #2
Senior Member
Registered: Jun 2004
Posts: 2,553

Rep: Reputation: 52
you followed the instructions for installing jack yes ?
there is a front end for starting/using jack called qjackctl
you will need to install realtime-lsm kernel module and follow its instructions
(if you already have it do "modprobe realtime any=1")
run jack as root (this will give you realtime and mem locking which is a good thing)
this might not be a bad way to start out as root using sudo or however
(just run qjackctl as root and there you go)

now the other issue is rosegarden -- i think since it's KDE it can't run as root.
i'm not trying to knock a certain project and just because i find rosegarden confusing doesn't really mean squat -- it might be great.

but you might want to check out muse
its works good and can run as root till you get going enough to feel like rebuilding your kernel for realtime support for users.

if you have more problems just remember to include exact error messages
if you want to run jack without qjackctl as root use
jackd -R -dalsa -dhw:0 -r48000 -p1024 -n2


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