Application: plasmashell (5.8.3)
 (Compiled from sources)
Qt Version: 5.6.2
Frameworks Version: 5.27.0
Operating System: Linux 4.4.30-gentoox99 x86_64
Distribution: "Gentoo Base System release 2.2"

-- Information about the crash:
Connected the primary monitor that was disconnected before.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2b5ce2a840 (LWP 4948))]

Thread 11 (Thread 0x7f2b5a9a1700 (LWP 4968)):
#0  0x00007f2b69af1cdd in poll () from /lib64/libc.so.6
#1  0x00007f2b6db40882 in _xcb_conn_wait () from /usr/lib64/libxcb.so.1
#2  0x00007f2b6db4266f in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f2b5cb06269 in QXcbEventReader::run() () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f2b6a1b3c0c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f2b69302434 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f2b69afadfd in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f2b58d87700 (LWP 5035)):
#0  0x00007f2b69af1cdd in poll () from /lib64/libc.so.6
#1  0x00007f2b65b7cf5c in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f2b65b7d06c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f2b6a3a62ac in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007f2b6a357d8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f2b6a1af444 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007f2b6f28a0e5 in QDBusConnectionManager::run() () from /usr/lib64/libQt5DBus.so.5
#7  0x00007f2b6a1b3c0c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#8  0x00007f2b69302434 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f2b69afadfd in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f2b531e2700 (LWP 5111)):
#0  0x00007f2b65bc0cc9 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f2b65b7c377 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f2b65b7ce88 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f2b65b7d06c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f2b6a3a62ac in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f2b6a357d8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f2b6a1af444 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007f2b6c9ed715 in QQmlThreadPrivate::run() () from /usr/lib64/libQt5Qml.so.5
#8  0x00007f2b6a1b3c0c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#9  0x00007f2b69302434 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f2b69afadfd in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f2b5101a700 (LWP 5128)):
#0  0x00007f2b65bc0ce4 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f2b65b7c799 in g_main_context_query () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f2b65b7ced7 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f2b65b7d06c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f2b6a3a62ac in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f2b6a357d8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007f2b6a1af444 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007f2b6c9ed715 in QQmlThreadPrivate::run() () from /usr/lib64/libQt5Qml.so.5
#8  0x00007f2b6a1b3c0c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#9  0x00007f2b69302434 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f2b69afadfd in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f2b4739e700 (LWP 5131)):
#0  0x00007f2b6930800f in pthread_cond_wait () from /lib64/libpthread.so.0
#1  0x00007f2b6ebd1b44 in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /usr/lib64/libQt5Script.so.5
#2  0x00007f2b6ebd1b89 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /usr/lib64/libQt5Script.so.5
#3  0x00007f2b69302434 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f2b69afadfd in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f2abc02b700 (LWP 5133)):
#0  0x00007f2b69af1cdd in poll () from /lib64/libc.so.6
#1  0x00007f2b65b7cf5c in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f2b65b7d06c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f2b6a3a62ac in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007f2b6a357d8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f2b6a1af444 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007f2b6d372ab6 in QQuickPixmapReader::run() () from /usr/lib64/libQt5Quick.so.5
#7  0x00007f2b6a1b3c0c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#8  0x00007f2b69302434 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f2b69afadfd in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f2abb82a700 (LWP 5134)):
#0  0x00007f2b6930800f in pthread_cond_wait () from /lib64/libpthread.so.0
#1  0x00007f2b6a1b427a in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f2b6d3e2125 in QSGRenderThread::processEventsAndWaitForMore() () from /usr/lib64/libQt5Quick.so.5
#3  0x00007f2b6d3e250a in QSGRenderThread::run() () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f2b6a1b3c0c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f2b69302434 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f2b69afadfd in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f2ab8bad700 (LWP 5141)):
#0  0x00007f2b6930800f in pthread_cond_wait () from /lib64/libpthread.so.0
#1  0x00007f2b6a1b427a in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f2b6d3e2125 in QSGRenderThread::processEventsAndWaitForMore() () from /usr/lib64/libQt5Quick.so.5
#3  0x00007f2b6d3e250a in QSGRenderThread::run() () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f2b6a1b3c0c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f2b69302434 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f2b69afadfd in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f2aa194e700 (LWP 5158)):
#0  0x00007f2b6930800f in pthread_cond_wait () from /lib64/libpthread.so.0
#1  0x00007f2b6a1b427a in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f2b6d3e2125 in QSGRenderThread::processEventsAndWaitForMore() () from /usr/lib64/libQt5Quick.so.5
#3  0x00007f2b6d3e250a in QSGRenderThread::run() () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f2b6a1b3c0c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f2b69302434 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f2b69afadfd in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f2aa08af700 (LWP 5159)):
#0  0x00007f2b6930800f in pthread_cond_wait () from /lib64/libpthread.so.0
#1  0x00007f2b6a1b427a in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQt5Core.so.5
#2  0x00007f2b6d3e2125 in QSGRenderThread::processEventsAndWaitForMore() () from /usr/lib64/libQt5Quick.so.5
#3  0x00007f2b6d3e250a in QSGRenderThread::run() () from /usr/lib64/libQt5Quick.so.5
#4  0x00007f2b6a1b3c0c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#5  0x00007f2b69302434 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f2b69afadfd in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f2b5ce2a840 (LWP 4948)):
[KCrash Handler]
#6  0x00007f2b6d3f7b54 in QQuickItem::isEnabled() const () from /usr/lib64/libQt5Quick.so.5
#7  0x00007f2b6d413fa4 in QQuickWindowPrivate::setFocusInScope(QQuickItem*, QQuickItem*, Qt::FocusReason, QFlags<QQuickWindowPrivate::FocusOption>) () from /usr/lib64/libQt5Quick.so.5
#8  0x00007f2b6d3fa128 in QQuickItem::setFocus(bool, Qt::FocusReason) () from /usr/lib64/libQt5Quick.so.5
#9  0x00007f2b6d40c700 in QQuickWindow::focusInEvent(QFocusEvent*) () from /usr/lib64/libQt5Quick.so.5
#10 0x00007f2b6a6967c3 in QWindow::event(QEvent*) () from /usr/lib64/libQt5Gui.so.5
#11 0x00007f2b6d41b033 in QQuickWindow::event(QEvent*) () from /usr/lib64/libQt5Quick.so.5
#12 0x00007f2b6abe965c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#13 0x00007f2b6abedd70 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#14 0x00007f2b6a359200 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#15 0x00007f2b6a68c8c0 in QGuiApplicationPrivate::processActivatedEvent(QWindowSystemInterfacePrivate::ActivatedWindowEvent*) () from /usr/lib64/libQt5Gui.so.5
#16 0x00007f2b6a68cc8d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib64/libQt5Gui.so.5
#17 0x00007f2b6a66d7b3 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Gui.so.5
#18 0x00007f2b5cb356a0 in userEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/libQt5XcbQpa.so.5
#19 0x00007f2b65b7ccdd in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#20 0x00007f2b65b7cfc0 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#21 0x00007f2b65b7d06c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#22 0x00007f2b6a3a6297 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#23 0x00007f2b6a357d8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#24 0x00007f2b6a35f97c in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#25 0x000000000041c95d in main ()

Possible duplicates by query: bug 372385, bug 372274, bug 372271, bug 371936, bug 371789.

Reported using DrKonqi