This isn't a bad thing, as the only application to truly support JACK I've found is Ardour, so with most other applications you would want to send the signal to a system MIDI input. MuseScore doesn't utilize JACK to its full potential, as instruments are set to use a specific channel instead of having separate JACK signals for each instrument. Once these get resolved (I'm looking into submitting a pull request), JACK with MIDI playback should work perfectly, however, using JACK on non-Linux systems feels a bit unnecessary. The only other issues with JACK playback are these two issues: "/tmp/.mount_MuseScdQJPIA/AppRun: line 48: 24501 Segmentation fault "$/bin/mscore-portable" jackweakapi.cpp with Jack's version fixes the issues that pull request should get merged. Just by clicking the on the checkbox Musescore crashes here.Īt the end of the output, there's a mention of line number with I exit Musescore, and re-launch the application from terminal and I get this on output as soon as I do a checkmark on 'Jack Audio'. Here I have all settings for Jack enabled except 'Jack Audio'. It may also be worth installing an older version of JACKĪlso occurs on Debian 10 - with Musescore 3.3.3 - current appimage, TL DR: Try the 32 bit version, and experiment with different Jack device configuration. I could do some experimenting, but since it works now I'm afraid of breaking it :/ I feel maybe it's both JACK and MuseScore have overlapping bugs, as the 64 bit version doesn't connect with Jack, and 32 bit version only connects when JACK is configured to use certain devices. Windows DirectSound + 32 bit MuseScore fixes the issue on my end. Today though, I was changing the i/o devices for JACK to use Windows DirectSound, since I was having issues with Ardour connecting with JACK, and ASIO4ALL was hogging the output, ALSA style, I decided to give 32 bit MuseScore another chance. I tried some other versions, then gave up. So I tried the 2.x of MuseScore, which is only available precompiled for 32 bit, and JACK was back to being nonfunctional. A few days ago, I tried the latest stable 32 bit installer to see if that would fix the issue, and while everything seemed functional, the playback was botched, it played every note instantaniously. The playback controls are greyed out, and MuseScore does not appear in the JACK control panel. This is still an issue for Windows, from 2.1 to 3.3, even the nightly version.
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