Muse Sequencer | no sound | switches to to dummy output

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1

I tested the

  1. RPM version on the Gnome Workstation. Installation is possible but while running it, it not opens.
Errors starting with /usr/bin/muse4 -v 
/usr/bin/muse4 -v
QSocketNotifier: Can only be used with threads started with QThread
Gtk-Message: 01:07:37.844: Failed to load module "pk-gtk-module"

(muse4:183131): GLib-GObject-CRITICAL **: 01:07:37.875: cannot register existing type 'GtkWidget'

(muse4:183131): GLib-GObject-CRITICAL **: 01:07:37.875: cannot add class private field to invalid type '<invalid>'

(muse4:183131): GLib-GObject-CRITICAL **: 01:07:37.875: cannot add private field to invalid (non-instantiatable) type '<invalid>'

(muse4:183131): GLib-GObject-CRITICAL **: 01:07:37.875: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed

(muse4:183131): GLib-GObject-CRITICAL **: 01:07:37.875: cannot register existing type 'GtkBuildable'

(muse4:183131): GLib-GObject-CRITICAL **: 01:07:37.875: g_type_interface_add_prerequisite: assertion 'G_TYPE_IS_INTERFACE (interface_type)' failed

(muse4:183131): GLib-CRITICAL **: 01:07:37.876: g_once_init_leave_pointer: assertion 'result != 0' failed

(muse4:183131): GLib-GObject-CRITICAL **: 01:07:37.876: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed

(muse4:183131): Gtk-CRITICAL **: 01:07:37.876: gtk_widget_get_style_context: assertion 'GTK_IS_WIDGET (widget)' failed

(muse4:183131): Gtk-CRITICAL **: 01:07:37.876: gtk_style_context_lookup_color: assertion 'GTK_IS_STYLE_CONTEXT (context)' failed

(muse4:183131): Gtk-CRITICAL **: 01:07:37.876: gtk_style_context_get_color: assertion 'GTK_IS_STYLE_CONTEXT (context)' failed

(muse4:183131): GLib-GObject-CRITICAL **: 01:07:37.876: cannot register existing type 'GtkWidget'

(muse4:183131): GLib-GObject-CRITICAL **: 01:07:37.876: cannot add class private field to invalid type '<invalid>'

(muse4:183131): GLib-GObject-CRITICAL **: 01:07:37.876: cannot add private field to invalid (non-instantiatable) type '<invalid>'

(muse4:183131): GLib-GObject-CRITICAL **: 01:07:37.876: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
  • 1.1 Tested also in x11/wayland
  1. Flatpak version is installable and opens but still no sound >> switches to dummy output.
  2. The app image >> same as flatpak
    While closing the app, it releases the dummy output and i do have the audio working again.

https://muse-sequencer.github.io/

Source         : muse-4.2.1-1.fc40.src.rpm
Repository     : updates
Summary        : Midi/Audio Music Sequencer
URL            : https://muse-sequencer.github.io/
License        : Public Domain and GPLv2 and GPLv2+ and LGPLv2+
Description    : MusE is a MIDI/Audio sequencer with recording and editing capabilities. It can
               : perform audio effects like chorus/flanger in real-time via LASH and it supports
               : JACK and ALSA interfaces. MusE aims to be a complete multitrack virtual studio
               : for Linux.
Vendor         : Fedora Project

Does someone use this app and has some information to make it work.

My preference would be to use the RPM version, but I’m glad on any information I can get to make it work on any other type than RPM.

but I’m glad on any information I can get to make it work on any other type than RPM.

Tested rpm on a Fedora 40 KDE spin. There the RPM works, except the audio (no output).

2

Dummy output seams to be an issue with the kernel.
With this (Linux fe40 6.10.6-200.fc40.x86_64 #1 SMP PREEMPT_DYNAMIC) I get no dummy output when starting MusE

Aniway, I still not get any sound. Might be because of missing configuration ability/knowledge. The examples are from older MusE versions and in this time we not used Pipewire as default.