MuseScore grabs MIDI interfaces
Even if MIDI is disabled for entering notes into a score, MuseScore keeps hold of an external MIDI port. MuseScore seems to search for MIDI ports on startup and grab them all. The only way to keep hold of a MIDI port for use by other software currently is to plug the MIDI interface in after MuseScore has started.
When MuseScore does not need to use a MIDI port, it should release it so that other programs can use it.
Thanks.
Comments
This is is also an issue for me. I use an M-Audio Oxygen Keyboard on Windows with the M-Adio driver installed. The driver is only required if I want tio use two MIDI applications at once. Therefore you can uderstand my disappointment when I noticed that my keyboard wasn't available to my DAW once I started MuseScore.
Please, don't grab and hold any MIDI device at startup. And it should be possible not to use a MIDI input device (ie the drop-down needs an empty selector box).
AFAIK, the issue still exists in the nighlties.