Application: kwin_x11 (5.6.3)

Qt Version: 5.6.0
Frameworks Version: 5.21.0
Operating System: Linux 4.5.1-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed:

* Suspend notebook while in dock with external monitors connected.
* Wake the machine up while on the road (so nothing externally connected).
* Move a window to the edge of the screen to maximize it.
* KWin crashes.

- Additional details:

* Using nvidia proprietary drivers :-(

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9eb26d3840 (LWP 6708))]

Thread 5 (Thread 0x7f9e98aa8700 (LWP 6717)):
#0  0x00007f9eb1f10903 in select () from /usr/lib/libc.so.6
#1  0x00007f9eafebc57f in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () from /usr/lib/libQt5Core.so.5
#2  0x00007f9eafebdf87 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () from /usr/lib/libQt5Core.so.5
#3  0x00007f9eafebe472 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007f9eafe696fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007f9eafc92fe4 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007f9ea949da55 in ?? () from /usr/lib/libQt5DBus.so.5
#7  0x00007f9eafc97de8 in ?? () from /usr/lib/libQt5Core.so.5
#8  0x00007f9eb21d8424 in start_thread () from /usr/lib/libpthread.so.0
#9  0x00007f9eb1f17cbd in clone () from /usr/lib/libc.so.6

Thread 4 (Thread 0x7f9e92458700 (LWP 6719)):
#0  0x00007f9eb1f10903 in select () from /usr/lib/libc.so.6
#1  0x00007f9eafebc57f in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () from /usr/lib/libQt5Core.so.5
#2  0x00007f9eafebdf87 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () from /usr/lib/libQt5Core.so.5
#3  0x00007f9eafebe472 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007f9eafe696fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007f9eafc92fe4 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007f9eaa52d915 in ?? () from /usr/lib/libQt5Qml.so.5
#7  0x00007f9eafc97de8 in ?? () from /usr/lib/libQt5Core.so.5
#8  0x00007f9eb21d8424 in start_thread () from /usr/lib/libpthread.so.0
#9  0x00007f9eb1f17cbd in clone () from /usr/lib/libc.so.6

Thread 3 (Thread 0x7f9e7a37d700 (LWP 6722)):
#0  0x00007f9eb21de03f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007f9eaebf3134 in ?? () from /usr/lib/libQt5Script.so.5
#2  0x00007f9eaebf3179 in ?? () from /usr/lib/libQt5Script.so.5
#3  0x00007f9eb21d8424 in start_thread () from /usr/lib/libpthread.so.0
#4  0x00007f9eb1f17cbd in clone () from /usr/lib/libc.so.6

Thread 2 (Thread 0x7f9e85abd700 (LWP 8307)):
[KCrash Handler]
#5  0x00007f9eafe9bab7 in QObject::disconnect(QObject const*, char const*, QObject const*, char const*) () from /usr/lib/libQt5Core.so.5
#6  0x00007f9eb03ee815 in QOpenGLContext::setScreen(QScreen*) () from /usr/lib/libQt5Gui.so.5
#7  0x00007f9eafe98659 in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#8  0x00007f9eb0b8f68c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#9  0x00007f9eb0b948f6 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#10 0x00007f9eafe6b518 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#11 0x00007f9eafe6d3da in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#12 0x00007f9eafebe352 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#13 0x00007f9eaabfb34b in ?? () from /usr/lib/libQt5Quick.so.5
#14 0x00007f9eafc97de8 in ?? () from /usr/lib/libQt5Core.so.5
#15 0x00007f9eb21d8424 in start_thread () from /usr/lib/libpthread.so.0
#16 0x00007f9eb1f17cbd in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0x7f9eb26d3840 (LWP 6708)):
#0  0x00007f9eb21de03f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007f9eafc98c8b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQt5Core.so.5
#2  0x00007f9eaabf7e94 in ?? () from /usr/lib/libQt5Quick.so.5
#3  0x00007f9eaabf87ea in ?? () from /usr/lib/libQt5Quick.so.5
#4  0x00007f9eaac2dc63 in QQuickWindow::event(QEvent*) () from /usr/lib/libQt5Quick.so.5
#5  0x00007f9eb0b8f68c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#6  0x00007f9eb0b948f6 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#7  0x00007f9eafe6b518 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#8  0x00007f9eb03bfebe in QWindowPrivate::deliverUpdateRequest() () from /usr/lib/libQt5Gui.so.5
#9  0x00007f9eb03c03f9 in QWindow::event(QEvent*) () from /usr/lib/libQt5Gui.so.5
#10 0x00007f9eaac2dc85 in QQuickWindow::event(QEvent*) () from /usr/lib/libQt5Quick.so.5
#11 0x00007f9eb0b8f68c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#12 0x00007f9eb0b948f6 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#13 0x00007f9eafe6b518 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#14 0x00007f9eafebfb8e in QTimerInfoList::activateTimers() () from /usr/lib/libQt5Core.so.5
#15 0x00007f9eafebe454 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#16 0x00007f9e9b4f9b1d in ?? () from /usr/lib/libQt5XcbQpa.so.5
#17 0x00007f9eafe696fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#18 0x00007f9eafe71b7c in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#19 0x00007f9eb23f3a65 in kdemain () from /usr/lib/libkdeinit5_kwin_x11.so
#20 0x00007f9eb1e50710 in __libc_start_main () from /usr/lib/libc.so.6
#21 0x0000000000400769 in _start ()

Possible duplicates by query: bug 362137.

Reported using DrKonqi