Thread 1 (Thread 0x7f50ca7ef180 (LWP 28546)): #0 0x00007f50c7b27d7f in raise () at /usr/lib/libc.so.6 #1 0x00007f50c7b12672 in abort () at /usr/lib/libc.so.6 #2 0x00007f50c81f2284 in qt_message_fatal(QtMsgType, QMessageLogContext const&, QString const&) (context=..., message=...) at /home/david/projects/qt5/qtbase/src/corelib/global/qlogging.cpp:1901 #3 0x00007f50c81f2ecf in QMessageLogger::fatal(char const*, ...) const (this=this@entry=0x7ffc9381cc70, msg=msg@entry=0x7f50cb84cc2d "%s") at /home/david/projects/qt5/qtbase/src/corelib/global/qlogging.cpp:887 #4 0x00007f50cb6031f5 in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) (this=this@entry=0x560523b369f0, window=0x560524224c60, isEs=isEs@entry=false) at /home/david/projects/qt5-build/qtbase/include/QtCore/../../../../qt5/qtbase/src/corelib/tools/qarraydata.h:208 #5 0x00007f50cb62897f in QSGThreadedRenderLoop::handleExposure(QQuickWindow*) (this=this@entry=0x560523b369f0, window=window@entry=0x560524224c60) at /home/david/projects/qt5/qtdeclarative/src/quick/scenegraph/qsgthreadedrenderloop.cpp:978 #6 0x00007f50cb628af5 in QSGThreadedRenderLoop::exposureChanged(QQuickWindow*) (this=0x560523b369f0, window=0x560524224c60) at /home/david/projects/qt5/qtdeclarative/src/quick/scenegraph/qsgthreadedrenderloop.cpp:916 #7 0x00007f50cb682a5a in QQuickWindow::exposeEvent(QExposeEvent*) (this=) at /home/david/projects/qt5/qtdeclarative/src/quick/items/qquickwindow.cpp:229 #8 0x00007f50c87e3286 in QWindow::event(QEvent*) (this=this@entry=0x560524224c60, ev=ev@entry=0x7ffc9381d6e0) at /home/david/projects/qt5/qtbase/src/gui/kernel/qwindow.cpp:2309 #9 0x00007f50cb693e37 in QQuickWindow::event(QEvent*) (this=0x560524224c60, e=0x7ffc9381d6e0) at /home/david/projects/qt5/qtdeclarative/src/quick/items/qquickwindow.cpp:1673 #10 0x00007f5015edd6df in PlasmaQuick::Dialog::event(QEvent*) (this=0x560524224c60, event=0x7ffc9381d6e0) at /home/david/projects/kde5/src/frameworks/plasma-framework/src/plasmaquick/dialog.cpp:1300 #11 0x00007f50c8e19ead in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x5605236d4d60, receiver=receiver@entry=0x560524224c60, e=e@entry=0x7ffc9381d6e0) at /home/david/projects/qt5/qtbase/src/widgets/kernel/qapplication.cpp:3736 #12 0x00007f50c8e21c2b in QApplication::notify(QObject*, QEvent*) (this=0x7ffc93820688, receiver=0x560524224c60, e=0x7ffc9381d6e0) at /home/david/projects/qt5/qtbase/src/widgets/kernel/qapplication.cpp:3093 #13 0x00007f50c83c8a67 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x560524224c60, event=0x7ffc9381d6e0) at /home/david/projects/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1060 #14 0x00007f50c83c8ce0 in QCoreApplication::sendSpontaneousEvent(QObject*, QEvent*) (receiver=receiver@entry=0x560524224c60, event=event@entry=0x7ffc9381d6e0) at /home/david/projects/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1462 #15 0x00007f50c87d7dfb in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (e=) at /home/david/projects/qt5/qtbase/src/gui/kernel/qguiapplication.cpp:3066 #16 0x00007f50c87d7fd6 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) (e=e@entry=0x5605243f1e50) --Type for more, q to quit, c to continue without paging-- at /home/david/projects/qt5/qtbase/src/gui/kernel/qguiapplication.cpp:1902 #17 0x00007f50c87a9029 in QWindowSystemInterface::sendWindowSystemEvents(QFlags) (flags=flags@entry=...) at /home/david/projects/qt5/qtbase/src/gui/kernel/qwindowsysteminterface.cpp:1071 #18 0x00007f50c87a93c4 in QWindowSystemInterface::flushWindowSystemEvents(QFlags) (flags=flags@entry=...) at /home/david/projects/qt5/qtbase/src/gui/kernel/qwindowsysteminterface.cpp:1035 #19 0x00007f50c87c6f89 in QPlatformWindow::setVisible(bool) (this=0x5605243d0190, visible=) at ../../include/QtCore/../../../../qt5/qtbase/src/corelib/global/qflags.h:120 #20 0x00007f50c2106c34 in KWin::QPA::Window::setVisible(bool) (this=0x5605243d0190, visible=true) at /home/david/projects/kde5/src/kde/workspace/kwin/plugins/qpa/window.cpp:82 #21 0x00007f50c87e2e93 in QWindowPrivate::setVisible(bool) (this=0x560523a68550, visible=) at /home/david/projects/qt5/qtbase/src/gui/kernel/qwindow.cpp:402 #22 0x00007f50c87db72c in QWindow::setVisible(bool) (this=, visible=) at /home/david/projects/qt5/qtbase/src/gui/kernel/qwindow.cpp:612 #23 0x00007f5015edc7a0 in PlasmaQuick::Dialog::setVisible(bool) (this=0x560524224c60, visible=true) at /home/david/projects/kde5/src/frameworks/plasma-framework/src/plasmaquick/dialog.cpp:1361 #24 0x00007f5015ede1f4 in PlasmaQuick::Dialog::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=0x560524224c60, _c=QMetaObject::WriteProperty, _id=9, _a=0x7ffc9381da60) at src/plasmaquick/KF5PlasmaQuick_autogen/include/moc_dialog.cpp:347 #25 0x00007f50cb1cec97 in QQmlPropertyData::writeProperty(QObject*, void*, QFlags) const (flags=..., value=0x7ffc9381da2f, target=, this=) at ../../include/QtQml/5.12.2/QtQml/private/../../../../../../../qt5/qtdeclarative/src/qml/qml/qqmlpropertycache_p.h:346 #26 0x00007f50cb1cec97 in GenericBinding<1>::doStore(bool, QQmlPropertyData const*, QFlags) const (flags=..., pd=, value=, this=0x5605242dd140) at /home/david/projects/qt5/qtdeclarative/src/qml/qml/qqmlbinding.cpp:334 #27 0x00007f50cb1cec97 in GenericBinding<1>::write(QV4::Value const&, bool, QFlags) (this=0x5605242dd140, result=..., isUndefined=, flags=...) at /home/david/projects/qt5/qtdeclarative/src/qml/qml/qqmlbinding.cpp:296 #28 0x00007f50cb1cf762 in QQmlNonbindingBinding::doUpdate(QQmlJavaScriptExpression::DeleteWatcher const&, QFlags, QV4::Scope&) (this=0x5605242dd140, watcher=..., flags=..., scope=...) at ../../include/QtQml/5.12.2/QtQml/private/../../../../../../../qt5/qtdeclarative/src/qml/jsruntime/qv4scopedvalue_p.h:239 #29 0x00007f50cb1cc042 in QQmlBinding::update(QFlags) (this=0x5605242dd140, flags=..., flags@entry=...) at /home/david/projects/qt5/qtdeclarative/src/qml/qml/qqmlbinding.cpp:185 #30 0x00007f50cb1ccd80 in QQmlBinding::expressionChanged() (this=) at /home/david/projects/qt5-build/qtbase/include/QtCore/../../../../qt5/qtbase/src/corelib/global/qflags.h:120 #31 0x00007f50cb1c1683 in QQmlJavaScriptExpressionGuard_callback(QQmlNotifierEndpoint*, void**) (e=) at /home/david/p #32 0x00007f50cb19f219 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) (endpoint=, a=a@entry=0x0) at /home #33 0x00007f50cb13ac7a in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) (object=0x560524224a00, index=3, #34 0x00007f50c83fb2e5 in QMetaObject::activate(QObject*, int, int, void**) (sender=sender@entry=0x560524224a00, signalOffset= at /home/david/projects/qt5/qtbase/src/corelib/kernel/qobject.cpp:3646 #36 0x00007f50cc5ecfa2 in KWin::TabBox::SwitcherItem::visibleChanged() (this=0x560524224a00) at kwin_autogen/WF44ZIICEP/moc_switcher #37 0x00007f50cc59ee50 in KWin::TabBox::SwitcherItem::setVisible(bool) (this=0x560524224a00, visible=true) at /home/david/projects/k #38 0x00007f50cc5a1dd5 in KWin::TabBox::TabBoxHandlerPrivate::show() (this=0x560523a0a000) at /home/david/projects/kde5/src/kde/work #39 0x00007f50cc5a20ae in KWin::TabBox::TabBoxHandler::show() (this=0x560523a00840) at /home/david/projects/kde5/src/kde/workspace/k #40 0x00007f50cc58f13e in KWin::TabBox::TabBox::show() (this=0x560523824110) at /home/david/projects/kde5/src/kde/workspace/kwin/tab #41 0x00007f50cc5ed469 in KWin::TabBox::TabBox::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=0x560523824110, _c= at kwin_autogen/WF44ZIICEP/moc_tabbox.cpp:174 #42 0x00007f50c83fb94d in QMetaObject::activate(QObject*,