Application: kwin_x11 (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.1.27-27-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
I was using kdeveloper [ save as .....] after I selected the correct folder and file name and hit enter .....
It happens frequenly in OpenSuse Leap with session type Plasma5 .   Very often and randomly the desktop is lost ....... not a prety situation .

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fad6433e800 (LWP 4692))]

Thread 6 (Thread 0x7faca9afa700 (LWP 4977)):
#0  0x00007fad63d02293 in select () at /lib64/libc.so.6
#1  0x00007fad61b16179 in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fad61b17af5 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007fad61b17f3b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fad61ac0d53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fad618e261a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fad5bd6ce08 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fad618e732f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fad6332c0a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fad63d0902d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fad31472700 (LWP 4731)):
#0  0x00007fad6333003f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fad6085786b in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007fad60857899 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007fad6332c0a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007fad63d0902d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fad32683700 (LWP 4729)):
#0  0x00007fad6333003f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fad4134caa3 in  () at /usr/lib64/dri/r600_dri.so
#2  0x00007fad4134c227 in  () at /usr/lib64/dri/r600_dri.so
#3  0x00007fad6332c0a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007fad63d0902d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fad42a5b700 (LWP 4725)):
#0  0x00007fad63d02293 in select () at /lib64/libc.so.6
#1  0x00007fad61b16179 in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fad61b17af5 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007fad61b17f3b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fad61ac0d53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fad618e261a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fad5bd6ce08 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fad618e732f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fad6332c0a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fad63d0902d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fad4b06b700 (LWP 4714)):
#0  0x00007fad63d00bfd in poll () at /lib64/libc.so.6
#1  0x00007fad61621402 in  () at /usr/lib64/libxcb.so.1
#2  0x00007fad6162314f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007fad4b9243c9 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007fad618e732f in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007fad6332c0a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007fad63d0902d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fad6433e800 (LWP 4692)):
[KCrash Handler]
#6  0x00007fad5bc3128f in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fad5bc316f0 in QV4::ExecutionEngine::toVariant(QV4::Value const&, int, bool) () at /usr/lib64/libQt5Qml.so.5
#8  0x00007fad5bcefada in QQmlPropertyPrivate::writeBinding(QObject*, QQmlPropertyData const&, QQmlContextData*, QQmlJavaScriptExpression*, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#9  0x00007fad5bd59833 in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#10 0x00007fad5bd6355a in  () at /usr/lib64/libQt5Qml.so.5
#11 0x00007fad5bcf1e3b in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) () at /usr/lib64/libQt5Qml.so.5
#12 0x00007fad5bcf1ef7 in QQmlComponentPrivate::completeCreate() () at /usr/lib64/libQt5Qml.so.5
#13 0x00007fad5bcf1d80 in QQmlComponent::create(QQmlContext*) () at /usr/lib64/libQt5Qml.so.5
#14 0x00007fad42c9a83f in  () at /usr/lib64/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#15 0x00007fad63939cfb in  () at /usr/lib64/libkwin.so.5
#16 0x00007fad6383aad1 in  () at /usr/lib64/libkwin.so.5
#17 0x00007fad6383b64b in  () at /usr/lib64/libkwin.so.5
#18 0x00007fad6388a53a in  () at /usr/lib64/libkwin.so.5
#19 0x00007fad6381e9eb in KWin::Workspace::createClient(unsigned int, bool) () at /usr/lib64/libkwin.so.5
#20 0x00007fad6387208e in KWin::Workspace::workspaceEvent(xcb_generic_event_t*) () at /usr/lib64/libkwin.so.5
#21 0x00007fad61abffc0 in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib64/libQt5Core.so.5
#22 0x00007fad4b922044 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#23 0x00007fad4b92401b in QXcbConnection::processXcbEvents() () at /usr/lib64/libQt5XcbQpa.so.5
#24 0x00007fad61af3ac6 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#25 0x00007fad627afe7c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#26 0x00007fad627b4cc8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#27 0x00007fad61ac2e95 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#28 0x00007fad61ac5057 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#29 0x00007fad61b17ec4 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#30 0x00007fad4b98433d in  () at /usr/lib64/libQt5XcbQpa.so.5
#31 0x00007fad61ac0d53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#32 0x00007fad61ac88f6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#33 0x00007fad63fd19e7 in kdemain () at /usr/lib64/libkdeinit5_kwin_x11.so
#34 0x00007fad63c45b25 in __libc_start_main () at /lib64/libc.so.6
#35 0x000000000040085e in _start ()

Reported using DrKonqi