I lost track of this thread. I will at least bother to reply here.
>> - Are you using the LTS version based on 18.04, or the newest version
based on 18.10?
I'm actually using Ubuntu Studio 19.04. I am trying to get the most
productivity out of my workstation at the moment. Would LOVE to have a
working Trisquel setup, even if I have to go install the 18.04 based Ubuntu
thread.
>> - Did JACK work out of the box (especially if you tried it with a
laptop's soundcard as opposed to an audio interface)?
- Do they use a JACK-pulseaudio bridge, or do they avoid pulseaudio
entirely?
On Ubuntu Studio 19.04 JACK works out of the box very well.
>> - It doesn't look like Ubuntu's repo or Ubuntu Studio's PPA include
Cadence and Catia. Do they use qjackctl, or do they have another
graphical tool for configuring and routing JACK?
They use Ubuntu Studio Controls, which I believe works in the place of Catia,
minus the extended features of that app, like patching, etc.