On Mon, 26 Dec 2016 17:05:08 +0000, David Sumbler wrote: >On Mon, 2016-12-26 at 17:01 +0100, Ralf Mardorf wrote: >> On Mon, 26 Dec 2016 15:40:00 +0000, David Sumbler wrote: >> > >> > I click to connect the keyboard input (or output) to qTractor or >> > something else, and the Messages window in qJackCtl shows an ALSA >> > connection change. >> > >> > But no change is shown in the Connections window, and it seems that >> > the connection is not made because nothing gets through to >> > qTractor. >> Please copy and post the message window output, also run >> >> amidi -l >> pgrep -a jack >> pgrep -a a2j >> >> and post it. > >I get: > >david@eros:~$ amidi -l >Dir Device Name >IO hw:2,0,0 CASIO USB-MIDI MIDI 1 >david@eros:~$ pgrep -a jack >2324 /usr/bin/jackdbus auto >2400 /usr/bin/qjackctl >david@eros:~$ pgrep -a a2j >david@eros:~$ > >(No output from the 3rd command.)
That's ok, I only wanted to ensure that you do or don't run a command containing "a2j". You have forgotten to post the output from the message window. I can't help you with jackdbus. IMO dbus is a PITA and shouldn't be used with jack. I'm only running jackd. I even don't understand why on my machine alsarawmidi is part of what seems to be the jackdbus config, but the log doesn't mention it [1]. However, assuming you would launch jackdbus with xalsarawmidi, it could be the culprit. Btw. xalsarawmidi is very good to reduce MIDI jitter, but using it is tricky. Regards, Ralf [1] [rocketmouse@archlinux ~]$ grep alsarawmidi ~/.config/jack/conf.xml <driver name="alsarawmidi"> [rocketmouse@archlinux ~]$ grep Dec\ 26 ~/.log/jack/jackdbus.log Mon Dec 26 18:16:43 2016: ------------------ Mon Dec 26 18:16:43 2016: Controller activated. Version 1.9.11 (0+f2ece2418c875eb7e7ac3d25fbb484ddda47ab46) built on Thu Jan 1 01:00:00 1970 Mon Dec 26 18:16:43 2016: Loading settings from "/home/rocketmouse/.config/jack/conf.xml" using expat_2.2.0 ... Mon Dec 26 18:16:43 2016: setting parameter 'engine':'driver':'(null)' to value "alsa" Mon Dec 26 18:16:43 2016: setting parameter 'engine':'realtime':'(null)' to value "true" Mon Dec 26 18:16:43 2016: setting parameter 'drivers':'alsa':'device' to value "hw:0" Mon Dec 26 18:16:43 2016: setting parameter 'drivers':'alsa':'rate' to value "48000" Mon Dec 26 18:16:43 2016: setting parameter 'drivers':'alsa':'period' to value "256" Mon Dec 26 18:16:43 2016: setting parameter 'drivers':'alsa':'nperiods' to value "2" Mon Dec 26 18:16:43 2016: Listening for D-Bus messages -- 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
