I can confirm that with this 3 packages (below) installed, this *can* work.

- "jack-audio-connection-kit"

- "jack-audio-connection-kit-dbus"

- "pulseaudio-module-jack"

But there is 2 problems:

1- The JACK server must be started with "jack_control", instead of "jackd"; but "jack_control" is misconfigured by default. It needed, at least, change the "driver" parameter to "alsa", first.

2- Seems that when JACK server isn't running, the application tries to run it with "jackd". Although this can be prevented by running JACK server (with "jack_control") all the time. If not optimal, maybe some parameter in "jack_control" can fix it.

So, does anyone know how to fix any of these problems? Also, if fixed, does anyone agree that this may be an interesting little feature for Fedora Workstation? if yes, I could also try to check why JACK is not getting permission to use Realtime Scheduling.

(sorry for bad English)