Hello, I am hit also by this, e.g. no systray or alt+f2 not finding anything.
I took a deeper look at this and I think the file contains a future plugin version: gdb -batch -ex 'file /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/applets/org.kde.plasma.systemtray.so' -ex 'print kde_plugin_version' $1 = 340224 Therefore a version check fails: (gdb) list Plasma::PluginLoader::isPluginVersionCompatible 858 bool PluginLoader::isPluginVersionCompatible(KPluginLoader &loader) ... 871 if (version < minVersion || version > maxVersion) { 872 #ifndef NDEBUG 873 qCDebug(LOG_PLASMA) << loader.fileName() << ": this plugin is compiled against incompatible Plasma version" << version 874 << "This build is compatible with" << PLASMA_VERSION_MAJOR << ".0.0 (" << minVersion 875 << ") to" << PLASMA_VERSION_STRING << "(" << maxVersion << ")"; Trying to start a dedicated process for the systray with logging enabled shows this: $ QT_LOGGING_RULES="*plasma*=true" plasmawindowed org.kde.plasma.systemtray org.kde.plasmaquick: Applet preload policy set to 1 org.kde.plasma: "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma_containmentactions_paste.so" : this plugin is compiled against incompatible Plasma version 340224 This build is compatible with 5 .0.0 ( 327680 ) to 5.47.0 ( 339772 ) org.kde.plasma: "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma_containmentactions_contextmenu.so" : this plugin is compiled against incompatible Plasma version 340224 This build is compatible with 5 .0.0 ( 327680 ) to 5.47.0 ( 339772 ) org.kde.plasma: "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma_containmentactions_switchdesktop.so" : this plugin is compiled against incompatible Plasma version 340224 This build is compatible with 5 .0.0 ( 327680 ) to 5.47.0 ( 339772 ) org.kde.plasma: "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/applets/org.kde.plasma.systemtray.so" : this plugin is compiled against incompatible Plasma version 340224 This build is compatible with 5 .0.0 ( 327680 ) to 5.47.0 ( 339772 ) Unable to load applet "org.kde.plasma.systemtray" with arguments () Running with a local built packages of src:plasma-workspace (in a just testing packages environment) the systray came back and alt+f2 is also normal again. Kind regards, Bernhard