seq64 does not play when using JACK

Question

seq64 does not play when using JACK

mxmilkiib opened this issue 5 years ago · 4 comments

With JACK enabled, clicking play directly after starting does nothing other than change the button state, i.e., the time display does not move.

Answer 1 · 2019-08-31T11:52:55.000Z

Just started looking into this, but am having weird issues between Seq64, Yoshimi, ALSA, and JACK. Gotta get past that first.

In the meantime, clarify if you have both JACK Transport and JACK MIDI enabled in Seq64. Also recreate your issues with the QJackCtl Connections window open and let me know what else you find. Also, are you running from master or the midi_control branch? Thanks man!

Answer 2 · 2019-08-31T14:15:46.000Z

Well, there's something up with yoshimi, whether the latest Ubuntu version 1.5.6 or the 1.6 rc built from source. Wants ALSA audio (but JACK MIDI), no matter what. And I have force-kill it ("killall -9 yoshimi"). I'm running the midi_control build of Seq64 with Qsynth now, at it seems to be working fine with JACK. I'll check out the qt bug now.

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-------- Milk Brewster 08:46 Thu 29 Aug --------

With JACK enabled, clicking play directly after starting does nothing other than change the button state, i.e., the time display does not move. — You are receiving this because you are subscribed to this thread. Reply to this email directly, [1]view it on GitHub, or [2]mute the thread. References Visible links 1. #177?email_source=notifications&email_token=AB45LKDMCVRGCJH3FGNRAITQG7VODA5CNFSM4ISD5MOKYY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4HIHUUTQ 2. https://github.com/notifications/unsubscribe-auth/AB45LKFZXDGRIOJX2E2QQRLQG7VODANCNFSM4ISD5MOA

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Answer 3 · 2019-08-31T14:22:18.000Z

Aaaaah. It's because for some reason the MIDI Driver was set to None, rather than ASLA Sequencer. Apologies for the noise. Gosh knows how that got set.

Answer 4 · 2019-08-31T14:24:33.000Z

Ah, possibly because I tested moving to a systemd unit to start JACK with, and the problem is the same using that, so obviously the preferences used by the unit file don't define MIDI, and maybe Cadence is 'smart' enough to pickup what JACK is set to by means other than itself.