Some time ago, Richard Cooper said:
Sometimes, in the matrix editor, when I click on a
note and Rosegarden plays that note,
it never sends a note off event for that note.
Usually it does, but it sometimes justgets into a mode
where it won't send note offs for any note that is
It seems that if you play back part of a song, then
stop playback, and then click on notes in the matrix
editor (in the grid, not the little keyboard to the
side), they play for a short 1/4 of a second, but if
you then use the playback controls to move the playback
position (either move it to the beginning of the song
or move it forward or back a measure) then clicking on
a note causes that note to play forever. If I then
clicking the play button and then the stop button, then
the notes return to their desired behaviour of
terminating after 1/4 of a second.
To be able to reproduce the problem:
1) JACK must be running before starting Rosegarden.
2) Settings -> Configure Rosegarden -> Sequencer ->
Synchronisation -> JACK transport mode == Sync
The problem looks (hears) different with MIDI
instruments and with DSSI ones. With MIDI there are
lost NoteOff events, making the notes to sound forever,
until you use the play/stop controls. With DSSI
instruments, you simply don't hear the notes when
clicking over the note rectangles, but the notes will
sound suddenly all together when you press the "play"
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