On Tue, 2016-12-27 at 17:57 +0100, Ralf Mardorf wrote: > An example seems to work on my machine: > > $ amidi -l > Dir Device Name > IO hw:0,0 HDSPMx579bcc MIDI 1 > IO hw:3,0,0 nanoKONTROL MIDI 1 > > $ pkill -9 jack; pkill a2j > > $ jackd -Xalsarawmidi -dalsa -r48000 -p256 & a2jmidid -e & > qjackctl > > In QjackCtl's ALSA tab the device names are the same as displayed by > the above amidi command, but in the MIDI tab the names are > > system system > midi_capture_1 midi_playback_1 > midi_capture_2 midi_playback_2 > > Qtractor only appears in the ALSA tab. While connecting HDSPM and > nanoKONTROL doesn't work directly in the ALSA tab, connecting MIDI > Through with Qtractor works. It requires some trail and error, I > don't > remember how to use it at the moment. It's a long time ago I used > Linux > for MIDI. However, IIRC a2j... is only needed if > > - you are using jack2 with external synth and you want to reduce MIDI > jitter by using -Xalsarawmidi > > - you are not necessarily using -Xalsarawmidi, but you are using > Linux > apps, that only support jack MIDI and not ALSA MIDI, while other > apps > only support ALSA MIDI and you want to connect jack and ALSA MIDI > apps > > If you only want to use ALSA MIDI, no -Xalsarawmidi and no jack MIDI > apps, simply run > > $ pkill -9 jack; pkill a2j > $ jackd -dalsa -r48000 -p256 & qjackctl > > then you should be able to connect everything by the ALSA tab without > issues.
I get: david@eros:~$ jackd -Xalsarawmidi -dalsa -r48000 -p256 & a2jmidid -e & qjackctl [1] 6201 [2] 6202 jackdmp 1.9.11 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2014 Grame. jackdmp comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details a2jmidid: invalid option -- '�' Usage: a2jmidid [-j jack-server] [-e | --export-hw] [-u] Defaults: -j default no message buffer overruns no message buffer overruns no message buffer overruns JACK server starting in realtime mode with priority 10 self-connect-mode is "Don't restrict self connect requests" audio_reservation_init Acquire audio card Audio0 creating alsa driver ... hw:0|hw:0|256|2|48000|0|0|nomon|swmeter|- |32bit ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to capture-only mode Cannot initialize driver JackServer::Open failed with -1 Failed to open server and similar results with the jackd -dalsa -r48000 -p256 & qjackctl command. Nothing appears in the MIDI tab of qjackctl: as ever, the keyboard appears as both an input and output device in the ALSA tab, but can't acrually be connected to anything else. David -- ubuntu-studio-users mailing list ubuntu-studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
