musescore nightly dies if using Jack as I/O method

• Jul 11, 2019 - 15:56
Reported version
3.x-dev
Type
Functional
Frequency
Few
Severity
S4 - Minor
Reproducibility
Always
Status
active
Regression
No
Workaround
No
Project
  1. Install the most recent nightly appimage on Fedora 30 (Workstation Edition), Arch.: x86_64, MuseScore version (64-bit): 3.3.0.23055, revision: fa50dff from https://musescore.org/en/node/add/project_issue?pid=1236. My platform is fedora 30, my kernel is 5.1.17-300.fc30.x86_64.

  2. Problem: musescore-2.2 usus jack for I/o, but the nightly wont. Switch to this I/o method lets the nightly die (saying apply or OK) after using Jack as I/O method) with the error msg

/tmp/.mount_vg56V6/AppRun: line 28: 5606 Segmentation fault (core dumped) "${APPDIR}/bin/mscore-portable-nightly" "$@".

What I seeing in the terminal is

ack appears to be installed on this system, so we'll use it.
QApplication: invalid style override passed, ignoring it.
ALSA lib pcm.c:2564:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2564:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2564:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock