Application: kwin_x11 (5.8.7)

Qt Version: 5.6.2
Frameworks Version: 5.32.0
Operating System: Linux 4.4.92-31-default x86_64
Distribution: "openSUSE Leap 42.3"

-- Information about the crash:
- Cada cierto tiempo (menos de una hora) desaparece la barra de tareas y la decoración de ventanas y vuelven a aparecer pasados unos segundos (5-10 segundos aproximadamente).

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f28ed6c8940 (LWP 24458))]

Thread 6 (Thread 0x7f28af3fe700 (LWP 24524)):
#0  0x00007f28ed0f40bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f28ea2eb69b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f28e556e55b in  () at /usr/lib64/libQt5Quick.so.5
#3  0x00007f28e55702d5 in  () at /usr/lib64/libQt5Quick.so.5
#4  0x00007f28ea2eaa29 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f28ed0ef744 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f28ece2daad in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f28ae6fc700 (LWP 24476)):
#0  0x00007f28ed0f40bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f28e947993b in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f28e9479969 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f28ed0ef744 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f28ece2daad in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f28b5b4a700 (LWP 24473)):
#0  0x00007f28ece26873 in select () at /lib64/libc.so.6
#1  0x00007f28ea4f96c9 in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f28ea4faf43 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f28ea4fb3a7 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f28ea4aabfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f28ea2e5f5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f28e4e993d8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f28ea2eaa29 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f28ed0ef744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f28ece2daad in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f28c62ec700 (LWP 24471)):
#0  0x00007f28ece26873 in select () at /lib64/libc.so.6
#1  0x00007f28ea4f96c9 in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f28ea4faf43 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f28ea4fb3a7 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f28ea4aabfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f28ea2e5f5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f28e4e993d8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f28ea2eaa29 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f28ed0ef744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f28ece2daad in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f28d4bbe700 (LWP 24463)):
#0  0x00007f28ece26873 in select () at /lib64/libc.so.6
#1  0x00007f28ea4f96c9 in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f28ea4faf43 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f28ea4fb3a7 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f28ea4aabfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f28ea2e5f5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f28e406f295 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007f28ea2eaa29 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f28ed0ef744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f28ece2daad in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f28ed6c8940 (LWP 24458)):
[KCrash Handler]
#6  0x00000000418012cf in  ()
#7  0x00007f28db4e12d0 in  () at /usr/lib64/libnvidia-glcore.so.340.104
#8  0x00007f28db4e8360 in  () at /usr/lib64/libnvidia-glcore.so.340.104
#9  0x00007f28db155378 in  () at /usr/lib64/libnvidia-glcore.so.340.104
#10 0x00007f28ead00bca in QOpenGLTextureGlyphCache::resizeTextureData(int, int) () at /usr/lib64/libQt5Gui.so.5
#11 0x00007f28eac74e70 in QTextureGlyphCache::fillInPendingGlyphs() () at /usr/lib64/libQt5Gui.so.5
#12 0x00007f28e555afc3 in  () at /usr/lib64/libQt5Quick.so.5
#13 0x00007f28e555902d in  () at /usr/lib64/libQt5Quick.so.5
#14 0x00007f28e55da52b in  () at /usr/lib64/libQt5Quick.so.5
#15 0x00007f28e55e0637 in  () at /usr/lib64/libQt5Quick.so.5
#16 0x00007f28e55dad18 in  () at /usr/lib64/libQt5Quick.so.5
#17 0x00007f28e55d9ee7 in QQuickText::updatePaintNode(QSGNode*, QQuickItem::UpdatePaintNodeData*) () at /usr/lib64/libQt5Quick.so.5
#18 0x00007f28e5599ff7 in QQuickWindowPrivate::updateDirtyNode(QQuickItem*) () at /usr/lib64/libQt5Quick.so.5
#19 0x00007f28e559ab6a in QQuickWindowPrivate::updateDirtyNodes() () at /usr/lib64/libQt5Quick.so.5
#20 0x00007f28e559bae0 in QQuickWindowPrivate::syncSceneGraph() () at /usr/lib64/libQt5Quick.so.5
#21 0x00007f28e567be2c in QQuickRenderControl::sync() () at /usr/lib64/libQt5Quick.so.5
#22 0x00007f28c654f906 in  () at /usr/lib64/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#23 0x00007f28ea4d6de3 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#24 0x00007f28ea4e3dd2 in QTimer::timerEvent(QTimerEvent*) () at /usr/lib64/libQt5Core.so.5
#25 0x00007f28ea4d7bf4 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#26 0x00007f28eb1ad28c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#27 0x00007f28eb1b18ea in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#28 0x00007f28ea4acbe5 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#29 0x00007f28ea4fcafe in QTimerInfoList::activateTimers() () at /usr/lib64/libQt5Core.so.5
#30 0x00007f28ea4fb448 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#31 0x00007f28ce749e3d in  () at /usr/lib64/libQt5XcbQpa.so.5
#32 0x00007f28ea4aabfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#33 0x00007f28ea4b2ae6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#34 0x00007f28ed30d9cc in kdemain () at /usr/lib64/libkdeinit5_kwin_x11.so
#35 0x00007f28ecd646e5 in __libc_start_main () at /lib64/libc.so.6
#36 0x0000000000400809 in _start ()

Reported using DrKonqi