jack_umidi : Can't send MIDI to audio interface

Marcel Bonnet marcelbonnet at gmail.com
Thu May 10 11:24:11 UTC 2018

On 10 May 2018 at 07:22, Hans Petter Selasky <hps at selasky.org> wrote:

> On 05/10/18 04:49, Marcel Bonnet wrote:
>> Hi,
>> I'm running 11.1-RELEASE . Audio interface is M-AUDIO Fast Track Pro.
>> Everything works good, except that MIDI is not working bi-directional
>> Using jack_umidi 1.0.8  I can control virtual synths. But the USB
>> interface
>> does not blink the MIDI Output led when I play the jack_keyaboard
>> connected
>> to the Fast Track Pro input.
>> I tested with jack_midi_dump : it dumps MIDI messages received from Jack
>> Keyboard or from my external Keyboard (Roland XP-30), as you can see
>> below.
>> What could I do to send MIDI messages to my external interface?
> Might also be a permissions issue on /dev/umidiX.Y .
> --HPS
> I'll check the permissions later.

I start the daemons with qjackctl. My ~/.jacdrc :

/usr/local/bin/jackd -r -doss -r44100 -p256 -n3 -w16 -C/dev/dsp3.0

After that:

jack_umidi -S -B -d /dev/umidi0.0


Marcel Bonnet

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