MIDI Keyboard Not Responded when Pressed Before Opening a Score

• Jun 24, 2018 - 20:48
Reported version
S3 - Major

Bug Reproducibility


Steps to Reproduce the Bug

  1. Launch MuseScore.
  2. Close any opening scores.
  3. Press any key on a MIDI keyboard.
  4. Open a new score.
  5. Enter Note Input mode by clicking the N icon on the toolbar or pressing N key on computer keyboard.
  6. Press the keys on the MIDI keyboard.

Expected Behavior

The MIDI keyboard should be working to enter notes as expected.

Actual Behavior

No response at all no matter what keys are pressed on the MIDI keyboard.

Hardware & Software

  • MacBook Pro 15" Retina (2012)
  • macOS High Sierra 10.13.5
  • Novation Launchkey 61 USB MIDI keyboard MK2
  • MuseScore 2.2.1 Revision 51b8386



Thanks for filing this formally! This is indeed a problem, and a pretty serious one that for some reason keeps slipping through the cracks. I don't know that we understand all the reasons why MIDI input doesn't work for some people, but this particular one seems clear enough, and the code identified in https://musescore.org/en/node/233651#comment-808918 is almost certainly the cause.

The line in question was added here:


to solve #40931: Using a note to change note length disables entering chords with MIDI. I'm not up enough on what's going on to say for sure what the proper fix is, but it seems likely to be an easy fix for someone who knows the MIDI input a bit better.