Figured it out. The so called "exclusive" mode is because of the application opening the port in "raw mode" So far I only used sequencer mode in my code and this did not bump into this situation. On Mon, Sep 4, 2017 at 6:34 PM, happy musicmaker <happy.musicmaker@xxxxxxxxx > wrote: > > I ready somewhere that some applications, like Bitwig, allocate(?) MIDI > ports in "exclusive" mode so that other application cannot connect to the > MIDI ports. I used Bitwig and confirmed that after starting Bitwig in > qjackctrl you cannot connect any of the MIDI write/read ports. ( qjackctrl > MIDI option is set to "none") I could not find any documentation on such > "exclusive" feature though ? > > > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel