[xyz@localhost ~]$ sudo qtractor -style Fusion
[sudo] password for xyz:
No protocol specified
qt.qpa.xcb: could not connect to display :0
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Aborted
[xyz@localhost ~]$ qtractor -style Fusion
Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
(qtractor:2443): GLib-GObject-WARNING **: 19:21:28.098: g_object_get_is_valid_property: object class 'GtkSettings' has no property named 'gtk-long-press-time'
(qtractor:2443): GLib-GObject-WARNING **: 19:21:28.098: g_object_get_is_valid_property: object class 'GtkSettings' has no property named 'gtk-application-prefer-dark-theme'
[xyz@localhost ~]$ sudo qtractor -style Fusion
[sudo] password for xyz:
No protocol specified
qt.qpa.xcb: could not connect to display :0
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.
Aborted
[xyz@localhost ~]$ qtractor -style Fusion
Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
(qtractor:2443): GLib-GObject-WARNING **: 19:21:28.098: g_object_get_is_valid_property: object class 'GtkSettings' has no property named 'gtk-long-press-time'
(qtractor:2443): GLib-GObject-WARNING **: 19:21:28.098: g_object_get_is_valid_property: object class 'GtkSettings' has no property named 'gtk-application-prefer-dark-theme'