Midi keyboard doesn't work in LMMS in Debian Linux. It appears in LMMS as Input, but performs no sound when a key is pressing. I tried using QJackCtl, "a2jmidid -e" and most available options.
LMMS settings:
sound driver = Jack
midi driver = ALSA seq
QJackCtl settinhs:
driver = ALSA
midi...