Got black screen after update to 5.24.3
Here's what I got when starting plasmashell from terminal:
$ plasmashell
kf.plasma.quick: Applet preload policy set to 1
file:///usr/share/plasma/plasmoids/org.kde.plasma.notes/contents/ui/ShortcutMenuItem.qml:17:5: QML Shortcut: Shortcut: Only binding to one of multiple key bindings associated with 10. Use 'sequences: [ <key> ]' to bind to all of them.
file:///usr/share/plasma/plasmoids/org.kde.plasma.notes/contents/ui/ShortcutMenuItem.qml:17:5: QML Shortcut: Shortcut: Only binding to one of multiple key bindings associated with 9. Use 'sequences: [ <key> ]' to bind to all of them.
file:///usr/share/plasma/plasmoids/org.kde.plasma.notes/contents/ui/ShortcutMenuItem.qml:17:5: QML Shortcut: Shortcut: Only binding to one of multiple key bindings associated with 8. Use 'sequences: [ <key> ]' to bind to all of them.
file:///usr/share/plasma/plasmoids/org.kde.plasma.notes/contents/ui/main.qml:152:13: QML TextArea: Binding loop detected for property "implicitWidth"
QtWebEngine::initialize() called with QCoreApplication object already created and should be call before. This is depreciated and may fail in the future.
QtWebEngine::initialize() must be called from the Qt gui thread.
KCrash: Attempting to start /usr/bin/plasmashell
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = plasmashell path = /usr/bin pid = 5674
KCrash: Arguments: /usr/bin/plasmashell
KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi
QSocketNotifier: Invalid socket 8 and type 'Read', disabling...
QSocketNotifier: Invalid socket 14 and type 'Read', disabling...
QSocketNotifier: Invalid socket 16 and type 'Read', disabling...
kf.plasma.quick: Applet preload policy set to 1
file:///usr/share/plasma/plasmoids/org.kde.plasma.notes/contents/ui/ShortcutMenuItem.qml:17:5: QML Shortcut: Shortcut: Only binding to one of multiple key bindings associated with 10. Use 'sequences: [ <key> ]' to bind to all of them.
file:///usr/share/plasma/plasmoids/org.kde.plasma.notes/contents/ui/ShortcutMenuItem.qml:17:5: QML Shortcut: Shortcut: Only binding to one of multiple key bindings associated with 9. Use 'sequences: [ <key> ]' to bind to all of them.
file:///usr/share/plasma/plasmoids/org.kde.plasma.notes/contents/ui/ShortcutMenuItem.qml:17:5: QML Shortcut: Shortcut: Only binding to one of multiple key bindings associated with 8. Use 'sequences: [ <key> ]' to bind to all of them.
file:///usr/share/plasma/plasmoids/org.kde.plasma.notes/contents/ui/main.qml:152:13: QML TextArea: Binding loop detected for property "implicitWidth"
QtWebEngine::initialize() called with QCoreApplication object already created and should be call before. This is depreciated and may fail in the future.
QtWebEngine::initialize() must be called from the Qt gui thread.

[1]+ Stopped plasmashell

However krunner is working and I can run apps. there's no panel and black screen instead of wallpaper. I think it's somehow related to widgets, so is there a way to exactly determine what particular widget causes this?

and kde crash handler output, which appears in couple of seconds after login:

Application: Plasma (plasmashell), signal: Aborted

[New LWP 5675]
[New LWP 5676]
[New LWP 5677]
[New LWP 5679]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5634c7cefdb4) at ../sysdeps/nptl/futex-internal.h:183
__preamble__
[Current thread is 1 (Thread 0x7fa160da24c0 (LWP 5674))]

Thread 5 (Thread 0x7fa14a849700 (LWP 5679)):
[KCrash Handler]
#4 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#5 0x00007fa164b61859 in __GI_abort () at abort.c:79
#6 0x00007fa164fa5bd7 in QMessageLogger::fatal(char const*, ...) const () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007fa13443cc8a in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8 0x00007fa141ef857e in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngine.so.5
#9 0x00007fa1651cb231 in qAddPreRoutine(void (*)()) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fa167632b8a in ?? () from /lib64/ld-linux-x86-64.so.2
#11 0x00007fa167632c91 in ?? () from /lib64/ld-linux-x86-64.so.2
#12 0x00007fa164c9f895 in __GI__dl_catch_exception (exception=<optimized out>, operate=<optimized out>, args=<optimized out>) at dl-error-skeleton.c:182
#13 0x00007fa1676370bf in ?? () from /lib64/ld-linux-x86-64.so.2
#14 0x00007fa164c9f838 in __GI__dl_catch_exception (exception=<optimized out>, operate=<optimized out>, args=<optimized out>) at dl-error-skeleton.c:208
#15 0x00007fa1676365fa in ?? () from /lib64/ld-linux-x86-64.so.2
#16 0x00007fa163ee034c in dlopen_doit (a=a@entry=0x7fa14a847b30) at dlopen.c:66
#17 0x00007fa164c9f838 in __GI__dl_catch_exception (exception=exception@entry=0x7fa14a847ad0, operate=operate@entry=0x7fa163ee02f0 <dlopen_doit>, args=args@entry=0x7fa14a847b30) at dl-error-skeleton.c:208
#18 0x00007fa164c9f903 in __GI__dl_catch_error (objname=objname@entry=0x7fa144007a20, errstring=errstring@entry=0x7fa144007a28, mallocedp=mallocedp@entry=0x7fa144007a18, operate=operate@entry=0x7fa163ee02f0 <dlopen_doit>, args=args@entry=0x7fa14a847b30) at dl-error-skeleton.c:227
#19 0x00007fa163ee0b59 in _dlerror_run (operate=operate@entry=0x7fa163ee02f0 <dlopen_doit>, args=args@entry=0x7fa14a847b30) at dlerror.c:170
#20 0x00007fa163ee03da in __dlopen (file=<optimized out>, mode=<optimized out>) at dlopen.c:87
#21 0x00007fa1651c3c5f in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fa1651bd5ed in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fa1651bdbd7 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007fa1651b1996 in QPluginLoader::load() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fa1667a3c01 in QQmlImportDatabase::importDynamicPlugin(QString const&, QString const&, QString const&, int, QList<QQmlError>*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#26 0x00007fa1667a873a in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#27 0x00007fa1667a947d in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#28 0x00007fa1667a9602 in QQmlImports::addLibraryImport(QQmlImportDatabase*, QString const&, QString const&, int, int, QString const&, QString const&, bool, QList<QQmlError>*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#29 0x00007fa16677830d in QQmlTypeLoader::Blob::addImport(std::shared_ptr<QQmlTypeLoader::Blob::PendingImport>, QList<QQmlError>*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#30 0x00007fa166778c97 in QQmlTypeLoader::Blob::addImport(QV4::CompiledData::Import const*, QList<QQmlError>*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#31 0x00007fa16671b340 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#32 0x00007fa16671ba53 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#33 0x00007fa1667743f6 in QQmlTypeLoader::setData(QQmlDataBlob*, QQmlDataBlob::SourceCodeData const&) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#34 0x00007fa1667747a8 in QQmlTypeLoader::setData(QQmlDataBlob*, QString const&) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#35 0x00007fa166774db4 in QQmlTypeLoader::loadThread(QQmlDataBlob*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#36 0x00007fa166727701 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#37 0x00007fa1667fce77 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#38 0x00007fa1667fd5fa in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#39 0x00007fa165edcdc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#40 0x00007fa165ee5bd8 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#41 0x00007fa1651c7e2a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00007fa1651ca731 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x00007fa1652230a7 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#44 0x00007fa1634e917d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007fa1634e9400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007fa1634e94a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007fa165222702 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007fa1651c692b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x00007fa164fe0462 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#50 0x00007fa1667fcb39 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#51 0x00007fa164fe1643 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#52 0x00007fa164ac4609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#53 0x00007fa164c5e163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fa15ccac700 (LWP 5677)):
#0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5634c7964cc8) at ../sysdeps/nptl/futex-internal.h:183
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5634c7964c78, cond=0x5634c7964ca0) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x5634c7964ca0, mutex=0x5634c7964c78) at pthread_cond_wait.c:638
#3 0x00007fa15d0e75eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4 0x00007fa15d0e71eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5 0x00007fa164ac4609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6 0x00007fa164c5e163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fa15f5d6700 (LWP 5676)):
#0 0x00007fa164c519cf in __GI___poll (fds=0x7fa150015e30, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007fa1634e936e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fa1634e94a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fa16522271b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fa1651c692b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007fa164fe0462 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007fa165b56f4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7 0x00007fa164fe1643 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007fa164ac4609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9 0x00007fa164c5e163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fa160249700 (LWP 5675)):
#0 0x00007fa164c519cf in __GI___poll (fds=0x7fa160248ae8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007fa16737ac1a in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2 0x00007fa16737c90a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3 0x00007fa1609741a8 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4 0x00007fa164fe1643 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007fa164ac4609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6 0x00007fa164c5e163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fa160da24c0 (LWP 5674)):
#0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5634c7cefdb4) at ../sysdeps/nptl/futex-internal.h:183
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5634c7cefd60, cond=0x5634c7cefd88) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x5634c7cefd88, mutex=0x5634c7cefd60) at pthread_cond_wait.c:638
#3 0x00007fa164fe76ab in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fa1667fd285 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#5 0x00007fa16677b2c5 in void QQmlTypeLoader::doLoad<PlainLoader>(PlainLoader const&, QQmlDataBlob*, QQmlTypeLoader::Mode) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#6 0x00007fa16677511a in QQmlTypeLoader::load(QQmlDataBlob*, QQmlTypeLoader::Mode) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#7 0x00007fa166776cc8 in QQmlTypeLoader::getType(QUrl const&, QQmlTypeLoader::Mode) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#8 0x00007fa166748521 in QQmlComponentPrivate::loadUrl(QUrl const&, QQmlComponent::CompilationMode) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#9 0x00007fa16720a6d7 in ?? () from /lib/x86_64-linux-gnu/libKF5Declarative.so.5
#10 0x00007fa1675c8f61 in PlasmaQuick::AppletQuickItem::init() () from /lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#11 0x00007fa15c3de1c9 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/scriptengines/plasma_appletscript_declarative.so
#12 0x00007fa1675cb111 in PlasmaQuick::AppletQuickItem::itemChange(QQuickItem::ItemChange, QQuickItem::ItemChangeData const&) () from /lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#13 0x00007fa166ca02a5 in QQuickItemPrivate::itemChange(QQuickItem::ItemChange, QQuickItem::ItemChangeData const&) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007fa166ca455e in QQuickItemPrivate::refWindow(QQuickWindow*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007fa166ca451e in QQuickItemPrivate::refWindow(QQuickWindow*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007fa166ca67d4 in QQuickItem::setParentItem(QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007fa1675d6d50 in ?? () from /lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#18 0x00005634c7320235 in ?? ()
#19 0x00005634c7329899 in ?? ()
#20 0x00007fa1651feebe in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fa167574da5 in KActivities::Consumer::serviceStatusChanged(KActivities::Consumer::ServiceStatus) () from /lib/x86_64-linux-gnu/libKF5Activities.so.5
#22 0x00007fa1651feebe in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fa167574d45 in ?? () from /lib/x86_64-linux-gnu/libKF5Activities.so.5
#24 0x00007fa16758e046 in ?? () from /lib/x86_64-linux-gnu/libKF5Activities.so.5
#25 0x00007fa16758e27d in ?? () from /lib/x86_64-linux-gnu/libKF5Activities.so.5
#26 0x00007fa16757563f in ?? () from /lib/x86_64-linux-gnu/libKF5Activities.so.5
#27 0x00007fa1651feef0 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007fa165bba0e3 in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#29 0x00007fa165bba1e8 in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#30 0x00007fa1651f5a19 in QObject::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007fa165edcdc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#32 0x00007fa165ee5bd8 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007fa1651c7e2a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007fa1651ca731 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007fa1652230a7 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007fa1634e917d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007fa1634e9400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007fa1634e94a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007fa165222702 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007fa1651c692b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007fa1651cead4 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00005634c72f6db5 in ?? ()
#43 0x00007fa164b630b3 in __libc_start_main (main=0x5634c72f5f50, argc=1, argv=0x7fff67687908, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff676878f8) at ../csu/libc-start.c:308
#44 0x00005634c72f6ede in ?? ()
[Inferior 1 (process 5674) detached]

https://bugs.kde.org/show_bug.cgi?id=451371

help me please! is there a way to remove notes widget (which causes this, I think)? I tried to (re)move file:///usr/share/plasma/plasmoids/org.kde.plasma.notes/contents/ui/ShortcutMenuItem.qml
but result's the same