Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fac70d2de80 (LWP 2674))]

Thread 6 (Thread 0x7fac4f5ef700 (LWP 3324)):
#0  0x00007fac706afdd6 in ppoll () at /usr/lib/libc.so.6
#1  0x00007fac6da4ccbb in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007fac6da4e1ab in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007fac6d9fc6fc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fac6d845849 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007fac680e79c9 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007fac6d84f8f5 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fac696a70bc in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fac706ba2ff in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fac318be700 (LWP 2832)):
#0  0x00007fac696ad07c in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fac6c970aac in  () at /usr/lib/libQt5Script.so.5
#2  0x00007fac6c970ac9 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007fac696a70bc in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fac706ba2ff in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fac335ff700 (LWP 2831)):
#0  0x00007fac706afdd6 in ppoll () at /usr/lib/libc.so.6
#1  0x00007fac6da4ccbb in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007fac6da4e1ab in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007fac6d9fc6fc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fac6d845849 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007fac680e79c9 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007fac6d84f8f5 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fac696a70bc in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fac706ba2ff in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fac4098f700 (LWP 2830)):
#0  0x00007fac696ad07c in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fac424ced44 in  () at /usr/lib/dri/nouveau_dri.so
#2  0x00007fac424cea38 in  () at /usr/lib/dri/nouveau_dri.so
#3  0x00007fac696a70bc in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fac706ba2ff in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fac5521c700 (LWP 2795)):
#0  0x00007ffe17f5bb04 in clock_gettime ()
#1  0x00007fac706c7d76 in clock_gettime () at /usr/lib/libc.so.6
#2  0x00007fac6da50712 in  () at /usr/lib/libQt5Core.so.5
#3  0x00007fac6da4eefa in QTimerInfoList::updateCurrentTime() () at /usr/lib/libQt5Core.so.5
#4  0x00007fac6da4f4f6 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/libQt5Core.so.5
#5  0x00007fac6da4e3f5 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fac6d9fc6fc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fac6d845849 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fac66fd9976 in  () at /usr/lib/libQt5DBus.so.5
#9  0x00007fac6d84f8f5 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fac696a70bc in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fac706ba2ff in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fac70d2de80 (LWP 2674)):
[KCrash Handler]
#6  0x00007fac42036f85 in  () at /usr/lib/dri/nouveau_dri.so
#7  0x00007fac41e1668e in  () at /usr/lib/dri/nouveau_dri.so
#8  0x00007fac42315697 in  () at /usr/lib/dri/nouveau_dri.so
#9  0x00007fac4231583a in  () at /usr/lib/dri/nouveau_dri.so
#10 0x00007fac421e25bd in  () at /usr/lib/dri/nouveau_dri.so
#11 0x00007fac421e2a22 in  () at /usr/lib/dri/nouveau_dri.so
#12 0x00007fac423115ef in  () at /usr/lib/dri/nouveau_dri.so
#13 0x00007fac41dba3fb in  () at /usr/lib/dri/nouveau_dri.so
#14 0x00007fac41db4be3 in  () at /usr/lib/dri/nouveau_dri.so
#15 0x00007fac43b9af21 in  () at /usr/lib/libGLX_mesa.so.0
#16 0x00007fac43b88769 in  () at /usr/lib/libGLX_mesa.so.0
#17 0x00007fac56b1131e in  () at /usr/lib/qt/plugins/xcbglintegrations/libqxcb-glx-integration.so
#18 0x00007fac56b11329 in  () at /usr/lib/qt/plugins/xcbglintegrations/libqxcb-glx-integration.so
#19 0x00007fac6e047ddf in QOpenGLContext::destroy() () at /usr/lib/libQt5Gui.so.5
#20 0x00007fac6e048178 in QOpenGLContext::~QOpenGLContext() () at /usr/lib/libQt5Gui.so.5
#21 0x00007fac6e04819a in QOpenGLContext::~QOpenGLContext() () at /usr/lib/libQt5Gui.so.5
#22 0x00007fac54134b94 in  () at /usr/lib/qt/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#23 0x00007fac54134c39 in  () at /usr/lib/qt/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#24 0x00007fac701733e6 in KWin::AbstractClient::destroyDecoration() () at /usr/lib/libkwin.so.5
#25 0x00007fac70183554 in KWin::Client::destroyDecoration() () at /usr/lib/libkwin.so.5
#26 0x00007fac70178e8c in KWin::Client::destroyClient() () at /usr/lib/libkwin.so.5
#27 0x00007fac701d5273 in KWin::Client::unmapNotifyEvent(xcb_unmap_notify_event_t*) () at /usr/lib/libkwin.so.5
#28 0x00007fac701d8b7c in KWin::Client::windowEvent(xcb_generic_event_t*) () at /usr/lib/libkwin.so.5
#29 0x00007fac701d9970 in KWin::Workspace::workspaceEvent(xcb_generic_event_t*) () at /usr/lib/libkwin.so.5
#30 0x00007fac6d9fb51f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib/libQt5Core.so.5
#31 0x00007fac58a1aa22 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib/libQt5XcbQpa.so.5
#32 0x00007fac58a1b60d in QXcbConnection::processXcbEvents() () at /usr/lib/libQt5XcbQpa.so.5
#33 0x00007fac6da28182 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#34 0x00007fac6e7d6a74 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#35 0x00007fac6e7de341 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#36 0x00007fac6d9fda69 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#37 0x00007fac6da00afc in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#38 0x00007fac6da4e01d in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#39 0x00007fac58aae9de in  () at /usr/lib/libQt5XcbQpa.so.5
#40 0x00007fac6d9fc6fc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#41 0x00007fac6da049f6 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#42 0x00007fac70986b56 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#43 0x00007fac705e49a7 in __libc_start_main () at /usr/lib/libc.so.6
#44 0x000056548f6f875a in _start ()