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Old 02-20-2005, 04:24 PM   #1
Registered: Nov 2004
Location: Canada
Distribution: SUSE 10
Posts: 69

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Question How to use Jack???

Could anyone explain me please what Jack is and how to make it work???
I'm on SUSE 9.2 running ALSA and I have Jack rpm installed. Now what???

Thak you for your help

Old 02-20-2005, 04:29 PM   #2
Registered: Mar 2004
Location: Brisbane, Australia
Distribution: VectorLinux; Ubuntu
Posts: 135

Rep: Reputation: 15
So find out what Jack does visit ...

To run jack - you probably want to install 'qjackctl' to give you a pretty GUI for running the Jack server.

Otherwise, open a terminal and run 'jackd -d alsa' or if you have the low-latency, realtime patch applied to your kernel run 'jaskstart -d alsa'.

Old 02-20-2005, 10:34 PM   #3
Senior Member
Registered: Jun 2004
Posts: 2,553

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yea use qjackctl for sure
another thing to consider is the reality that jack needs to be able to get a lock on memory and also use
the realtime clock signals
things only root can do.
i think the best thing to do is install a utility named "sudo" and configure it so as user you have permission to do root stuff
then start qjackctl with "sudo qjackctl"
and also start the other apps you wish to connect with jack the same way
(rosegarden is the only app i find doesn't seem to work this way but muse does)

jack is a sound server but it is easier to think of it as a patch bay (an array of jacks)
you can use it to hook audio things together (mic, keyboard, sound apps) and to hook various things to alsa ect.
jack also has its own transport but i have never used it

if you just want to get jack going from the command line try
sudo jackd -R -dalsa -dhw:0 -r48000 -p1024 -n2

xmms has a output plugin for jack if you want to hear some sound right off
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