https://bugs.kde.org/show_bug.cgi?id=412201

            Bug ID: 412201
           Summary: Panel disappears and desktop cannot right-click on
                    login
           Product: plasmashell
           Version: master
          Platform: Manjaro
                OS: Linux
            Status: REPORTED
          Severity: major
          Priority: NOR
         Component: Panel
          Assignee: plasma-b...@kde.org
          Reporter: thomascr...@protonmail.ch
  Target Milestone: 1.0

SUMMARY


STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT
When I logged in the other day, my desktop panel disappeared and I could not
right-click my desktop.  I have tried running plasmashell from the terminal,
but it results in a segfault.  I think it may have to do with CUPS as the past
week, I set up a network printer over the web interface.  Here is the output of
running plasmashell in the terminal:


$ plasmashell 
Icon theme "ubuntu-mono-dark" not found.
invalid metadata "/usr/lib/qt/plugins/kfileaudiopreview.so"
invalid metadata "/usr/lib/qt/plugins/jpegthumbnail.so"
invalid metadata "/usr/lib/qt/plugins/icon_mode.so"
invalid metadata "/usr/lib/qt/plugins/krunner_shell.so"
invalid metadata "/usr/lib/qt/plugins/fileviewdropboxplugin.so"
invalid metadata "/usr/lib/qt/plugins/djvuthumbnail.so"
invalid metadata "/usr/lib/qt/plugins/kdeconnect_runcommand_config.so"
invalid metadata "/usr/lib/qt/plugins/rawthumbnail.so"
invalid metadata "/usr/lib/qt/plugins/gsthumbnail.so"
invalid metadata "/usr/lib/qt/plugins/imagethumbnail.so"
invalid metadata "/usr/lib/qt/plugins/kcm_clock.so"
invalid metadata
"/usr/lib/qt/plugins/powerdevilwirelesspowersavingaction_config.so"
invalid metadata "/usr/lib/qt/plugins/kcm_nic.so"
invalid metadata "/usr/lib/qt/plugins/kcm_hotkeys.so"
invalid metadata "/usr/lib/qt/plugins/fileviewbazaarplugin.so"
invalid metadata "/usr/lib/qt/plugins/opendocumentthumbnail.so"
invalid metadata "/usr/lib/qt/plugins/kcm_dolphinviewmodes.so"
invalid metadata "/usr/lib/qt/plugins/kio_fonts.so"
invalid metadata "/usr/lib/qt/plugins/kritathumbnail.so"
invalid metadata "/usr/lib/qt/plugins/kcm_ssl.so"
invalid metadata "/usr/lib/qt/plugins/krunner_plasma-desktop.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kscreen.so"
invalid metadata "/usr/lib/qt/plugins/kcm_sddm.so"
invalid metadata "/usr/lib/qt/plugins/attica_kde.so"
invalid metadata "/usr/lib/qt/plugins/krunner_converter.so"
invalid metadata "/usr/lib/qt/plugins/kcm_plasmasearch.so"
invalid metadata "/usr/lib/qt/plugins/sambausershareplugin.so"
invalid metadata "/usr/lib/qt/plugins/kio_msits.so"
invalid metadata "/usr/lib/qt/plugins/kcm_desktoppaths.so"
invalid metadata "/usr/lib/qt/plugins/krunner_locations.so"
invalid metadata "/usr/lib/qt/plugins/kcmspellchecking.so"
invalid metadata "/usr/lib/qt/plugins/gvpart.so"
invalid metadata "/usr/lib/qt/plugins/krunner_spellcheck.so"
invalid metadata "/usr/lib/qt/plugins/kcm_smserver.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kwallet5.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kdeconnect.so"
invalid metadata "/usr/lib/qt/plugins/comicbookthumbnail.so"
invalid metadata "/usr/lib/qt/plugins/windowsexethumbnail.so"
invalid metadata "/usr/lib/qt/plugins/kcm_systemd.so"
invalid metadata "/usr/lib/qt/plugins/krunner_kill.so"
invalid metadata "/usr/lib/qt/plugins/windowsimagethumbnail.so"
invalid metadata "/usr/lib/qt/plugins/kcm_standard_actions.so"
invalid metadata "/usr/lib/qt/plugins/kcm_style.so"
invalid metadata "/usr/lib/qt/plugins/kcm_keys.so"
invalid metadata "/usr/lib/qt/plugins/kcm_opengl.so"
invalid metadata "/usr/lib/qt/plugins/fontthumbnail.so"
invalid metadata "/usr/lib/qt/plugins/exrthumbnail.so"
invalid metadata "/usr/lib/qt/plugins/textthumbnail.so"
invalid metadata "/usr/lib/qt/plugins/kwincompositing.so"
invalid metadata "/usr/lib/qt/plugins/krunner_datetime.so"
invalid metadata "/usr/lib/qt/plugins/kcm_view1394.so"
invalid metadata "/usr/lib/qt/plugins/kcm_pci.so"
invalid metadata "/usr/lib/qt/plugins/kcm_baloofile.so"
invalid metadata "/usr/lib/qt/plugins/powerdevildimdisplayaction_config.so"
invalid metadata "/usr/lib/qt/plugins/krunner_webshortcuts.so"
invalid metadata "/usr/lib/qt/plugins/libkcm_device_automounter.so"
invalid metadata "/usr/lib/qt/plugins/kcm_fontinst.so"
invalid metadata "/usr/lib/qt/plugins/krunner_bookmarksrunner.so"
invalid metadata "/usr/lib/qt/plugins/kded_touchpad.so"
invalid metadata "/usr/lib/qt/plugins/kcm_emoticons.so"
invalid metadata "/usr/lib/qt/plugins/kcm_webshortcuts.so"
invalid metadata "/usr/lib/qt/plugins/user_manager.so"
invalid metadata "/usr/lib/qt/plugins/kcm_autostart.so"
invalid metadata "/usr/lib/qt/plugins/kcm_memory.so"
invalid metadata "/usr/lib/qt/plugins/kcm_trash.so"
invalid metadata
"/usr/lib/qt/plugins/powerdevilkeyboardbrightnesscontrolaction_config.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kget_metalinkfactory.so"
invalid metadata "/usr/lib/qt/plugins/msm_timedate.so"
invalid metadata "/usr/lib/qt/plugins/kfontviewpart.so"
invalid metadata "/usr/lib/qt/plugins/kstyle_oxygen_config.so"
invalid metadata "/usr/lib/qt/plugins/kdeconnect_pausemusic_config.so"
invalid metadata "/usr/lib/qt/plugins/kcm_keyboard.so"
invalid metadata "/usr/lib/qt/plugins/svgthumbnail.so"
invalid metadata "/usr/lib/qt/plugins/kded_printmanager.so"
invalid metadata "/usr/lib/qt/plugins/krunner_services.so"
invalid metadata "/usr/lib/qt/plugins/appimagethumbnail.so"
invalid metadata "/usr/lib/qt/plugins/msm_locale.so"
invalid metadata "/usr/lib/qt/plugins/kstyle_breeze_config.so"
invalid metadata "/usr/lib/qt/plugins/krunner_konsoleprofiles.so"
invalid metadata "/usr/lib/qt/plugins/kcm_powerdevilglobalconfig.so"
invalid metadata "/usr/lib/qt/plugins/kcm_networkmanagement.so"
invalid metadata "/usr/lib/qt/plugins/powerdevildpmsaction.so"
invalid metadata "/usr/lib/qt/plugins/kcm_dolphingeneral.so"
invalid metadata "/usr/lib/qt/plugins/kio_obexftp.so"
invalid metadata "/usr/lib/qt/plugins/kio_bluetooth.so"
invalid metadata "/usr/lib/qt/plugins/kdeconnect_share_config.so"
invalid metadata "/usr/lib/qt/plugins/kcm_krunner_spellcheck.so"
invalid metadata "/usr/lib/qt/plugins/msm_kernel.so"
invalid metadata "/usr/lib/qt/plugins/krunner_recentdocuments.so"
invalid metadata "/usr/lib/qt/plugins/kcm_about_distro.so"
invalid metadata "/usr/lib/qt/plugins/powerdevildpmsaction_config.so"
invalid metadata "/usr/lib/qt/plugins/kcm_solid_actions.so"
invalid metadata "/usr/lib/qt/plugins/krunner_charrunner.so"
invalid metadata "/usr/lib/qt/plugins/krunner_windowedwidgets.so"
invalid metadata "/usr/lib/qt/plugins/kcm_printer_manager.so"
invalid metadata "/usr/lib/qt/plugins/kcm_info.so"
invalid metadata "/usr/lib/qt/plugins/kcm_samba.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kgamma.so"
invalid metadata "/usr/lib/qt/plugins/plasma-geolocation-gps.so"
invalid metadata "/usr/lib/qt/plugins/krunner_sessions.so"
invalid metadata "/usr/lib/qt/plugins/msm_language_packages.so"
invalid metadata "/usr/lib/qt/plugins/kcm_activities.so"
invalid metadata "/usr/lib/qt/plugins/kcm_joystick.so"
invalid metadata "/usr/lib/qt/plugins/ffmpegthumbs.so"
invalid metadata "/usr/lib/qt/plugins/okularpart.so"
invalid metadata "/usr/lib/qt/plugins/ebookthumbnail.so"
invalid metadata "/usr/lib/qt/plugins/krunner_dictionary.so"
invalid metadata "/usr/lib/qt/plugins/kget_browser_integration.so"
invalid metadata "/usr/lib/qt/plugins/dolphinpart.so"
invalid metadata "/usr/lib/qt/plugins/krunner_powerdevil.so"
invalid metadata "/usr/lib/qt/plugins/plasma-geolocation-ip.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kget_mmsfactory.so"
invalid metadata
"/usr/lib/qt/plugins/powerdevilhandlebuttoneventsaction_config.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kwintabbox.so"
invalid metadata "/usr/lib/qt/plugins/kdeconnect_sendnotifications_config.so"
invalid metadata "/usr/lib/qt/plugins/fileviewsvnplugin.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kwinoptions.so"
invalid metadata "/usr/lib/qt/plugins/libkcm_qtquicksettings.so"
invalid metadata "/usr/lib/qt/plugins/krunner_katesessions.so"
invalid metadata "/usr/lib/qt/plugins/mltpreview.so"
invalid metadata "/usr/lib/qt/plugins/kcm_usb.so"
invalid metadata "/usr/lib/qt/plugins/kcm_phonon.so"
invalid metadata
"/usr/lib/qt/plugins/powerdevilbrightnesscontrolaction_config.so"
invalid metadata "/usr/lib/qt/plugins/kcm_krunner_kill.so"
invalid metadata "/usr/lib/qt/plugins/blenderthumbnail.so"
invalid metadata "/usr/lib/qt/plugins/kcm_krunner_charrunner.so"
invalid metadata "/usr/lib/qt/plugins/kcm_mouse.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kamera.so"
invalid metadata "/usr/lib/qt/plugins/kcm_powerdevilprofilesconfig.so"
invalid metadata "/usr/lib/qt/plugins/kdeconnectfileitemaction.so"
invalid metadata "/usr/lib/qt/plugins/kcm_powerdevilactivitiesconfig.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kio.so"
invalid metadata
"/usr/lib/qt/plugins/libplasmanetworkmanagement_openconnectui.so"
invalid metadata "/usr/lib/qt/plugins/kcm_filetypes.so"
invalid metadata "/usr/lib/qt/plugins/powerdevilsuspendsessionaction_config.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kded.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kget_multisegkiofactory.so"
invalid metadata "/usr/lib/qt/plugins/kstyle_qtcurve5_config.so"
invalid metadata "/usr/lib/qt/plugins/fileviewhgplugin.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kwin_scripts.so"
invalid metadata "/usr/lib/qt/plugins/miloutextplugin.so"
invalid metadata "/usr/lib/qt/plugins/baloofilepropertiesplugin.so"
invalid metadata "/usr/lib/qt/plugins/msm_keyboard.so"
invalid metadata "/usr/lib/qt/plugins/audiothumbnail.so"
invalid metadata "/usr/lib/qt/plugins/fileviewgitplugin.so"
invalid metadata "/usr/lib/qt/plugins/krunner_calculatorrunner.so"
invalid metadata "/usr/lib/qt/plugins/krunner_windows.so"
invalid metadata "/usr/lib/qt/plugins/msm_mhwd.so"
invalid metadata "/usr/lib/qt/plugins/krunner_kwin.so"
invalid metadata "/usr/lib/qt/plugins/powerdevilrunscriptaction_config.so"
invalid metadata "/usr/lib/qt/plugins/krunner_appstream.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kwinrules.so"
invalid metadata "/usr/lib/qt/plugins/kcm_krunner_dictionary.so"
invalid metadata "/usr/lib/qt/plugins/kcm_componentchooser.so"
invalid metadata "/usr/lib/qt/plugins/kcm_access.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kwinscreenedges.so"
invalid metadata "/usr/lib/qt/plugins/kcm_dolphinnavigation.so"
invalid metadata "/usr/lib/qt/plugins/classic_mode.so"
invalid metadata "/usr/lib/qt/plugins/systemsettings_sidebar_mode.so"
invalid metadata "/usr/lib/qt/plugins/krunner_activities.so"
invalid metadata "/usr/lib/qt/plugins/msm_users.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kget_checksumsearchfactory.so"
invalid metadata "/usr/lib/qt/plugins/kcm_devinfo.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kget_mirrorsearchfactory.so"
invalid metadata "/usr/lib/qt/plugins/krunner_placesrunner.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kwintouchscreen.so"
invalid metadata "/usr/lib/qt/plugins/kcm_kget_bittorrentfactory.so"
invalid metadata "/usr/lib/qt/plugins/kio_kamera.so"
invalid metadata "/usr/lib/qt/plugins/kcm_dolphinservices.so"
org.kde.plasmaquick: Applet preload policy set to 1
file:///usr/share/plasma/wallpapers/org.kde.image/contents/ui/main.qml:71:9:
Unable to assign [undefined] to QStringList
file:///usr/share/plasma/wallpapers/org.kde.image/contents/ui/main.qml:71:9:
Unable to assign [undefined] to QStringList
trying to show an empty dialog
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19:
QML Loader: Binding loop detected for property "height"
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19:
QML Loader: Binding loop detected for property "height"
file:///usr/share/plasma/wallpapers/org.kde.image/contents/ui/main.qml:71:9:
Unable to assign [undefined] to QStringList
file:///usr/share/plasma/wallpapers/org.kde.image/contents/ui/main.qml:71:9:
Unable to assign [undefined] to QStringList
trying to show an empty dialog
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19:
QML Loader: Binding loop detected for property "height"
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19:
QML Loader: Binding loop detected for property "height"
file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/FolderItemDelegate.qml:302:17:
QML QQuickText: Binding loop detected for property "width"
file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/FolderItemDelegate.qml:302:17:
QML QQuickText: Binding loop detected for property "width"
file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/FolderItemDelegate.qml:302:17:
QML QQuickText: Binding loop detected for property "width"
Connecting to deprecated signal
QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
trying to show an empty dialog
trying to show an empty dialog
libkcups: CUPS-Get-Printers last error: 0 successful-ok
libkcups: Create-Printer-Subscriptions last error: 0 successful-ok
libkcups: Get-Jobs last error: 0 successful-ok
libkcups: Get-Jobs last error: 0 successful-ok
Plasma Shell startup completed
libkcups: 3 "Brother_MFC-J285DW"
libkcups: 5 "Canon_MG5500_series"
libkcups: 3
KCrash: Attempting to start /usr/bin/plasmashell from kdeinit
sock_file=/run/user/1000/kdeinit5__0
QSocketNotifier: Invalid socket 8 and type 'Read', disabling...
QSocketNotifier: Invalid socket 9 and type 'Read', disabling...
QSocketNotifier: Invalid socket 51 and type 'Read', disabling...
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = plasmashell path = /usr/bin pid = 4113
KCrash: Arguments: /usr/bin/plasmashell 
Segmentation fault (core dumped)


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

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