Application: plasmashell (5.9.2)

Qt Version: 5.8.0
Frameworks Version: 5.31.0
Operating System: Linux 4.9.9-1-MANJARO x86_64
Distribution: "Manjaro Linux"

-- Information about the crash:
error in laptop pc with second monitor on power on

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f305df5a800 (LWP 904))]

Thread 8 (Thread 0x7f2f8f666700 (LWP 1082)):
#0  0x00007f305243c2e2 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#1  0x00007f305243c7f0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f305243c89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f3057f4206b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f3057eeb89a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f3057d0da73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f2f91f380a7 in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#7  0x00007f3057d126d8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f3056bdd454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f30576277df in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f2fa52c0700 (LWP 1073)):
#0  0x00007f305761e48d in poll () at /usr/lib/libc.so.6
#1  0x00007f305243c786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f305243c89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f3057f4206b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f3057eeb89a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f3057d0da73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f305b9fafd6 in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007f3057d126d8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f3056bdd454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f30576277df in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f3033fff700 (LWP 1072)):
#0  0x00007f3056be310f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f305d6ef234 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f305d6ef279 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f3056bdd454 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f30576277df in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f303df71700 (LWP 1058)):
#0  0x00007f3052481db9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f305243bed1 in g_main_context_query () at /usr/lib/libglib-2.0.so.0
#2  0x00007f305243c6f8 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f305243c89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f3057f4206b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f3057eeb89a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f3057d0da73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f305ae47025 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f3057d126d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f3056bdd454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f30576277df in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f303f9d1700 (LWP 1015)):
#0  0x00007f3052481dd4 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f305243c69e in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f305243c89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f3057f4206b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f3057eeb89a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f3057d0da73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f305ae47025 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f3057d126d8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f3056bdd454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f30576277df in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f30455e8700 (LWP 978)):
#0  0x00007f3052481db9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f305243bed1 in g_main_context_query () at /usr/lib/libglib-2.0.so.0
#2  0x00007f305243c6f8 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f305243c89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f3057f4206b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f3057eeb89a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f3057d0da73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f3058357125 in  () at /usr/lib/libQt5DBus.so.5
#8  0x00007f3057d126d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f3056bdd454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f30576277df in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f3047242700 (LWP 907)):
#0  0x00007f305761e48d in poll () at /usr/lib/libc.so.6
#1  0x00007f305c6158e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f305c617679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f3049181239 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f3057d126d8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f3056bdd454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f30576277df in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f305df5a800 (LWP 904)):
[KCrash Handler]
#6  0x00007f30586f0d40 in QScreen::size() const () at /usr/lib/libQt5Gui.so.5
#7  0x000000000042da43 in  ()
#8  0x0000000000434abe in  ()
#9  0x0000000000434bcb in  ()
#10 0x00007f305adbaac9 in  () at /usr/lib/libQt5Qml.so.5
#11 0x00007f305adb95b6 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#12 0x00007f305adba70b in QQmlProperty::write(QVariant const&) const () at /usr/lib/libQt5Qml.so.5
#13 0x00007f305ae9253d in  () at /usr/lib/libQt5Qml.so.5
#14 0x00007f305adbaaa8 in  () at /usr/lib/libQt5Qml.so.5
#15 0x00007f305adb9ac4 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#16 0x00007f305ae2f030 in QQmlBinding::slowWrite(QQmlPropertyData const&, QQmlPropertyData const&, QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#17 0x00007f305ae306b0 in  () at /usr/lib/libQt5Qml.so.5
#18 0x00007f305ae318b0 in  () at /usr/lib/libQt5Qml.so.5
#19 0x00007f305ae2eae9 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#20 0x00007f305ae2ecde in QQmlBinding::refresh() () at /usr/lib/libQt5Qml.so.5
#21 0x00007f305ae04444 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/libQt5Qml.so.5
#22 0x00007f305ada85ec in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/libQt5Qml.so.5
#23 0x00007f3057f19464 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#24 0x00007f2fa73ecafb in  () at /usr/lib/qt/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#25 0x00007f3057efb537 in QMetaProperty::write(QObject*, QVariant const&) const () at /usr/lib/libQt5Core.so.5
#26 0x00007f3057f214af in QObject::setProperty(char const*, QVariant const&) () at /usr/lib/libQt5Core.so.5
#27 0x00007f305da185ec in  () at /usr/lib/libKF5PlasmaQuick.so.5
#28 0x00007f305da1c46b in  () at /usr/lib/libKF5PlasmaQuick.so.5
#29 0x00007f3057f18d49 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#30 0x00007f305ae31243 in  () at /usr/lib/libQt5Qml.so.5
#31 0x00007f305ae318b0 in  () at /usr/lib/libQt5Qml.so.5
#32 0x00007f305ae2eae9 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#33 0x00007f305ae2ecde in QQmlBinding::refresh() () at /usr/lib/libQt5Qml.so.5
#34 0x00007f305ae04444 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/libQt5Qml.so.5
#35 0x00007f305ada85ec in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/libQt5Qml.so.5
#36 0x00007f3057f19464 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#37 0x00007f305ae31243 in  () at /usr/lib/libQt5Qml.so.5
#38 0x00007f305ae318b0 in  () at /usr/lib/libQt5Qml.so.5
#39 0x00007f305ae2eae9 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#40 0x00007f305ae2ecde in QQmlBinding::refresh() () at /usr/lib/libQt5Qml.so.5
#41 0x00007f305ae04444 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/libQt5Qml.so.5
#42 0x00007f305ada85ec in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/libQt5Qml.so.5
#43 0x00007f3057f19464 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#44 0x00007f305ae31243 in  () at /usr/lib/libQt5Qml.so.5
#45 0x00007f305ae318b0 in  () at /usr/lib/libQt5Qml.so.5
#46 0x00007f305ae2eae9 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#47 0x00007f305ae2ecde in QQmlBinding::refresh() () at /usr/lib/libQt5Qml.so.5
#48 0x00007f305ae04444 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/libQt5Qml.so.5
#49 0x00007f305ada85ec in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/libQt5Qml.so.5
#50 0x00007f3057f19464 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#51 0x00007f2fa73ecafb in  () at /usr/lib/qt/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#52 0x00007f3057efb537 in QMetaProperty::write(QObject*, QVariant const&) const () at /usr/lib/libQt5Core.so.5
#53 0x00007f3057f214af in QObject::setProperty(char const*, QVariant const&) () at /usr/lib/libQt5Core.so.5
#54 0x00007f305da185ec in  () at /usr/lib/libKF5PlasmaQuick.so.5
#55 0x00007f305da1c46b in  () at /usr/lib/libKF5PlasmaQuick.so.5
#56 0x00007f3057f18d49 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#57 0x00007f305ae31243 in  () at /usr/lib/libQt5Qml.so.5
#58 0x00007f305ae318b0 in  () at /usr/lib/libQt5Qml.so.5
#59 0x00007f305ae2eae9 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#60 0x00007f305ae2ecde in QQmlBinding::refresh() () at /usr/lib/libQt5Qml.so.5
#61 0x00007f305ae04444 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/libQt5Qml.so.5
#62 0x00007f305ada85ec in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/libQt5Qml.so.5
#63 0x00007f3057f19464 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#64 0x00007f305ba9b5ec in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () at /usr/lib/libQt5Quick.so.5
#65 0x00007f305ba9f9f1 in QQuickItem::setImplicitSize(double, double) () at /usr/lib/libQt5Quick.so.5
#66 0x00007f305bb8aa3e in QQuickBasePositioner::prePositioning() () at /usr/lib/libQt5Quick.so.5
#67 0x00007f305bab7d80 in QQuickWindowPrivate::polishItems() () at /usr/lib/libQt5Quick.so.5
#68 0x00007f305ba52b4a in  () at /usr/lib/libQt5Quick.so.5
#69 0x00007f305ba53b25 in  () at /usr/lib/libQt5Quick.so.5
#70 0x00007f30586d2d05 in QWindow::event(QEvent*) () at /usr/lib/libQt5Gui.so.5
#71 0x00007f305bac04a5 in QQuickWindow::event(QEvent*) () at /usr/lib/libQt5Quick.so.5
#72 0x0000000000430923 in  ()
#73 0x00007f3058e5b34c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#74 0x00007f3058e62b61 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#75 0x00007f3057eed440 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#76 0x00007f30586c7d2d in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/libQt5Gui.so.5
#77 0x00007f30586c893d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/libQt5Gui.so.5
#78 0x00007f30586a444b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5
#79 0x00007f30491e19e0 in  () at /usr/lib/libQt5XcbQpa.so.5
#80 0x00007f305243c587 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#81 0x00007f305243c7f0 in  () at /usr/lib/libglib-2.0.so.0
#82 0x00007f305243c89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#83 0x00007f3057f4204f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#84 0x00007f3057eeb89a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#85 0x00007f3057ef3de4 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#86 0x000000000041ca42 in  ()
#87 0x00007f305755f291 in __libc_start_main () at /usr/lib/libc.so.6
#88 0x000000000041cdca in _start ()

Reported using DrKonqi