Created attachment 102536 [details] Stack trace The stack trace looks different from that of bug 372614 as such I'm reporting a new crash. The same system and setup applies as that of 372614 with the same multi screen return from standby scenario.
pasting inline Thread 1 (Thread 0x7ffb4ee9a8c0 (LWP 1578)): [KCrash Handler] #6 0x00007ffb4e8a7724 in PlasmaQuick::ContainmentView::containment() const (this=0x30206e656582) at /usr/include/qt5/QtCore/qsharedpointer_impl.h:604 #7 0x00007ffb4e8a7724 in PlasmaQuick::ContainmentView::containment() const (this=0x30206e656582) at /usr/include/qt5/QtCore/qpointer.h:86 #8 0x00007ffb4e8a7724 in PlasmaQuick::ContainmentView::containment() const (this=0x30206e656582) at /usr/include/qt5/QtCore/qpointer.h:92 #9 0x00007ffb4e8a7724 in PlasmaQuick::ContainmentView::containment() const (this=0x4d1dce0) at /usr/src/debug/plasma-framework-5.28.0/src/plasmaquick/containmentview.cpp:263 #10 0x000000000043f208 in ShellCorona::screenForContainment(Plasma::Containment const*) const (this=0x1115840, containment=<optimized out>) at /usr/src/debug/plasma-workspace-5.8.3/shell/shellcorona.cpp:1802 #11 0x000000000043f155 in ShellCorona::screenForContainment(Plasma::Containment const*) const (this=0x1115840, containment=<optimized out>) at /usr/src/debug/plasma-workspace-5.8.3/shell/shellcorona.cpp:1794 #12 0x00007ffa86c2b7ce in NotificationsApplet::onScreenChanges() (this=0x583a240) at /usr/src/debug/plasma-workspace-5.8.3/applets/notifications/lib/notificationsapplet.cpp:65 #13 0x00007ffb48e2721e in QMetaObject::activate(QObject*, int, int, void**) (a=0x7ffc18dac800, r=0x583a240, this=<optimized out>) at ../../src/corelib/kernel/qobject_impl.h:130 #14 0x00007ffb48e2721e in QMetaObject::activate(QObject*, int, int, void**) (sender=0x7ffb4bc84c00, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3723 #15 0x00007ffb34d3bdd8 in () at /usr/lib64/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so #16 0x00007ffb48df832f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) (this=<optimized out>, eventType=..., message=message@entry=0x7ffb28016c70, result=result@entry=0x7ffc18dac958) at kernel/qabstracteventdispatcher.cpp:466 #17 0x00007ffb39ae4dc4 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) (this=this@entry=0x1102340, event=event@entry=0x7ffb28016c70) at qxcbconnection.cpp:1103 #18 0x00007ffb39ae5a55 in QXcbConnection::processXcbEvents() (this=0x1102340) at qxcbconnection.cpp:1735 #19 0x00007ffb48e27d59 in QObject::event(QEvent*) (this=0x1102340, e=<optimized out>) at kernel/qobject.cpp:1263 #20 0x00007ffb49d7d92c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=<optimized out>, receiver=0x1102340, e=0x7ffb2807a330) at kernel/qapplication.cpp:3799 #21 0x00007ffb49d850e1 in QApplication::notify(QObject*, QEvent*) (this=0x7ffc18dad110, receiver=0x1102340, e=0x7ffb2807a330) at kernel/qapplication.cpp:3556 #22 0x00007ffb48dfb200 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x1102340, event=event@entry=0x7ffb2807a330) at kernel/qcoreapplication.cpp:988 #23 0x00007ffb48dfd98d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (event=0x7ffb2807a330, receiver=<optimized out>) at kernel/qcoreapplication.h:231 #24 0x00007ffb48dfd98d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x10e5fc0) at kernel/qcoreapplication.cpp:1649 #25 0x00007ffb48dfddf8 in QCoreApplication::sendPostedEvents(QObject*, int) (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1503 #26 0x00007ffb48e4f373 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x1127e70) at kernel/qeventdispatcher_glib.cpp:276 #27 0x00007ffb435cc677 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0 #28 0x00007ffb435cc8e0 in () at /usr/lib64/libglib-2.0.so.0 #29 0x00007ffb435cc98c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0 #30 0x00007ffb48e4f77f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x1138020, flags=...) at kernel/qeventdispatcher_glib.cpp:423 #31 0x00007ffb48df91ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffc18dacfa0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210 #32 0x00007ffb48e0195c in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1261 #33 0x00007ffb49347f4c in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1639 #34 0x00007ffb49d7d885 in QApplication::exec() () at kernel/qapplication.cpp:2975 #35 0x0
*may* be solved in 5.8.4, needs testing there *** This bug has been marked as a duplicate of bug 372963 ***