Application: plasmashell (5.4.2)

Qt Version: 5.5.0
Operating System: Linux 4.1.12-1-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
when i start my laptop, just plasma5 crash dialog appear
before that, when i connect my laptop to external display via hdmi, 
my taskbar seems crashed, but any other windows seems okay.
after that, when i start my laptop, it just show kde plasma 5 crash

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4c54c337c0 (LWP 2050))]

Thread 8 (Thread 0x7f4c3fc29700 (LWP 2052)):
#0  0x00007f4c4e1a3c1d in poll () at /lib64/libc.so.6
#1  0x00007f4c530a9422 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f4c530ab00f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f4c423abc29 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f4c4e89a55f in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f4c4d9ad0a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f4c4e1ac04d in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f4c36b50700 (LWP 2068)):
#0  0x00007f4c4e19fced in read () at /lib64/libc.so.6
#1  0x00007f4c4a8d5b60 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f4c4a894999 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f4c4a894df8 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f4c4a894f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f4c4eacba5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f4c4ea72a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f4c4e89584a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f4c51b655f8 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f4c4e89a55f in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f4c4d9ad0a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f4c4e1ac04d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f4c2b616700 (LWP 2069)):
#0  0x00007f4c4e1a3c1d in poll () at /lib64/libc.so.6
#1  0x00007f4c4a894e64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f4c4a894f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f4c4eacba5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f4c4ea72a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f4c4e89584a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f4c51b655f8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f4c4e89a55f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f4c4d9ad0a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f4c4e1ac04d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f4c29b94700 (LWP 2072)):
#0  0x00007f4c4a8d6d14 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f4c4a894d1d in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f4c4a894f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f4c4eacba5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f4c4ea72a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f4c4e89584a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f4c51b655f8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f4c4e89a55f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f4c4d9ad0a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f4c4e1ac04d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f4c23fff700 (LWP 2077)):
#0  0x00007f4c4d9b105f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f4c5430d7eb in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f4c5430d819 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f4c4d9ad0a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f4c4e1ac04d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f4c20b75700 (LWP 2078)):
#0  0x00007f4c4e19fced in read () at /lib64/libc.so.6
#1  0x00007f4c4a8d5b60 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f4c4a894999 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f4c4a894df8 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f4c4a894f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f4c4eacba5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f4c4ea72a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f4c4e89584a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f4c526f1f82 in  () at /usr/lib64/libQt5Quick.so.5
#9  0x00007f4c4e89a55f in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f4c4d9ad0a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f4c4e1ac04d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f4b96806700 (LWP 2080)):
[KCrash Handler]
#6  0x00007f4c4e16009d in __strstr_sse2_unaligned () at /lib64/libc.so.6
#7  0x00007f4c5274759a in QSGRenderContext::initialize(QOpenGLContext*) () at /usr/lib64/libQt5Quick.so.5
#8  0x00007f4c527650a1 in  () at /usr/lib64/libQt5Quick.so.5
#9  0x00007f4c4e89a55f in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f4c4d9ad0a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f4c4e1ac04d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f4c54c337c0 (LWP 2050)):
#0  0x00007f4c4d9b105f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f4c4e89b57b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f4c5276627e in  () at /usr/lib64/libQt5Quick.so.5
#3  0x00007f4c52768272 in  () at /usr/lib64/libQt5Quick.so.5
#4  0x00007f4c527688db in  () at /usr/lib64/libQt5Quick.so.5
#5  0x00007f4c4efcd5b9 in QWindow::event(QEvent*) () at /usr/lib64/libQt5Gui.so.5
#6  0x00007f4c527998b1 in QQuickWindow::event(QEvent*) () at /usr/lib64/libQt5Quick.so.5
#7  0x00000000004408b6 in DesktopView::event(QEvent*) ()
#8  0x00007f4c4fdede8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#9  0x00007f4c4fdf2cd8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#10 0x00007f4c4ea74ba5 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#11 0x00007f4c4efc6024 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib64/libQt5Gui.so.5
#12 0x00007f4c4efc6c3d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib64/libQt5Gui.so.5
#13 0x00007f4c4efabd68 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Gui.so.5
#14 0x00007f4c423d6f20 in  () at /usr/lib64/libQt5XcbQpa.so.5
#15 0x00007f4c4a894c84 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#16 0x00007f4c4a894ed8 in  () at /usr/lib64/libglib-2.0.so.0
#17 0x00007f4c4a894f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#18 0x00007f4c4eacba3c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#19 0x00007f4c4ea72a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#20 0x00007f4c4ea7a5d6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#21 0x000000000043467b in main ()

Reported using DrKonqi