Here are the steps we took to get JACK up and running with Ardour. The following was done on a clean install of Ubuntu Studio using the M-Audio Delta 44 sound card. We understand that different sound cards may require different settings, but this guide will at least give you a general idea of what needs to be done.
Getting JACK Started
First you’ll want to run JACK Control from the Applications menu. Here we see the default JACK panel :

Select the Settings button to configure JACK for your sound card. Here is the default JACK configuration :
