i'd suggest you to monitor the MIDI reception on device 2 using aseqdump or kmidimon; if note-offs are actually being lost at any rate, try to monitor the sending MIDI device 1 as well.
also try separate tests with qmidinet configured the same way on each end-point to one and only MIDI driver, either JACK or ALSA but not both.
i'd suggest you to monitor the MIDI reception on device 2 using aseqdump or kmidimon; if note-offs are actually being lost at any rate, try to monitor the sending MIDI device 1 as well.
also try separate tests with qmidinet configured the same way on each end-point to one and only MIDI driver, either JACK or ALSA but not both.
hth.
cheers