MuseScore won't launch on Flatpak

• Jan 22, 2022 - 13:07
Reported version
3.6
Type
Functional
Frequency
Once
Severity
S1 - Blocker
Reproducibility
Always
Status
closed
Regression
No
Workaround
Yes
Project
  1. Open MuseScore
  2. MuseScore doesn't launch

Terminal output shows :
unknown:unknown: Qt: Session management error: None of the authentication protocols specified are supported

I think it's caused by the Flatpak using Qt "5.15-21.08" branch, because it runs fine when it was "5.15". I'm not the maintainer, so as a workaround I just downgraded my installation. What version of Qt was MuseScore supposed to run on?


Comments

Frequency Few Once
Status active closed

Sorry, but the Flatpack version is not supported here. Only the AppImage is.
MuseScore 3.x is suppoted to run with Qt 5.9, but 5.15 seems to work too, at least it does on my local builds (on Windows)

I'd rather think that a Qt module is missing, like Qt WebEngine or maybe Qt Network Authorization, although ISTR that the latter is only needed for master (and the former only for 3.x and before)