Use of MIDI keyboard in Ubuntu

• Dec 14, 2022 - 19:29
Reported version
4.0
Type
Functional
Frequency
Few
Severity
S3 - Major
Reproducibility
Always
Status
active
Regression
No
Workaround
No
Project
MuseScore

Using Ubuntu 22.04, Musescore 4 does not recognize my MIDI keyboard. The keyboard worked fine in version 3.2.

Under Preferences ... I/O ... MIDI input lists no device.
MIDI output lists KeyRig 49, but this is an input, not an output device.

OS: Ubuntu 22.04.1 LTS, Arch.: x86_64,
MuseScore version (64-bit): 4.0.0-223472159, r
evision: 5485621

By they way, the new layout looks great!

jeffrey.clymer@gmail.com

Comments

• Feb 5, 2023 - 14:43

I'm also having this problem. I'm on Arch Linux, using MuseScore 4.0, and trying to connect VMPK to MuseScore for note input. My system is using PulseAudio and I get the following output from aconnect:

% aconnect -i
client 0: 'System' [type=kernel]
    0 'Timer           '
    1 'Announce        '
client 14: 'Midi Through' [type=kernel]
    0 'Midi Through Port-0'
client 129: 'VMPK Output' [type=user,pid=1950590]
    0 'out             '
% aconnect -o
client 14: 'Midi Through' [type=kernel]
    0 'Midi Through Port-0'
client 128: 'VMPK Input' [type=user,pid=1950590]
    0 'in              '

So it would seem that VMPK exposes itself as a MIDI device to ALSA, but MuseScore does not.

Historically I have used JACK and I saw another report that this is removed for now in MuseScore 4.0. But the documentation and UI don't tell me what MIDI backend is actually being used on Linux now, so I have no idea how to set it up! Do I have to use Pipewire or something instead? How can I get MuseScore to see my ALSA MIDI devices?

Reply