I find jack very hard to master and control (although it is apparently very powerful) so have sort of given up on Linux daws. There is also Fedora Jam and MX Linux Multimedia edition distros and a few daw’s including Harrison Mixbus (free demo) . I dabbled a bit with Traction Maveform when it was released last year but it was quite buggy then so I gave up. Good luck. I am sticking to Ableton LIve these days.