Application: kwin_x11 (5.7.4)

Qt Version: 5.6.1
Frameworks Version: 5.24.0
Operating System: Linux 4.4.0-9136-generic x86_64
Distribution: Ubuntu Yakkety Yak (development branch)

-- Information about the crash:
I just restarted my workstation after updates and the shell was crashed first thing so relaunched plasmashell from Alt-F2 menu, and am rebooting again

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fdf3b10cd80 (LWP 10412))]

Thread 6 (Thread 0x7fdf32109700 (LWP 10602)):
#0  0x00007ffeba7bbb52 in clock_gettime ()
#1  0x00007fdf50a2c806 in __GI___clock_gettime (clock_id=1, tp=0x7fdf32108a40) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fdf4e719726 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fdf4e898f49 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdf4e8982f6 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fdf4e898b7a in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fdf4e84300a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdf4e668d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fdf491266b5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fdf4e66dc68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fdf49fc770a in start_thread (arg=0x7fdf32109700) at pthread_create.c:333
#11 0x00007fdf50a1e0ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7fdf219bf700 (LWP 10469)):
#0  0x00007fdf49fcd510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fdf4da02574 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fdf4da025b9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fdf49fc770a in start_thread (arg=0x7fdf219bf700) at pthread_create.c:333
#4  0x00007fdf50a1e0ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7fdf315a8700 (LWP 10437)):
#0  0x00007fdf50a13ef3 in select () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fdf4e896bbf in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fdf4e898664 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fdf4e898b7a in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdf4e84300a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fdf4e668d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fdf491266b5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fdf4e66dc68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fdf49fc770a in start_thread (arg=0x7fdf315a8700) at pthread_create.c:333
#9  0x00007fdf50a1e0ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7fdf33b69700 (LWP 10431)):
#0  0x00007fdf50a13ef3 in select () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fdf4e896bbf in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fdf4e898664 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fdf4e898b7a in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdf4e84300a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fdf4e668d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fdf51023455 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fdf4e66dc68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fdf49fc770a in start_thread (arg=0x7fdf33b69700) at pthread_create.c:333
#9  0x00007fdf50a1e0ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7fdf398be700 (LWP 10430)):
#0  0x00007fdf50a1210d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fdf4fb93c62 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fdf4fb958d7 in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fdf3a794299 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fdf4e66dc68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fdf49fc770a in start_thread (arg=0x7fdf398be700) at pthread_create.c:333
#6  0x00007fdf50a1e0ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7fdf3b10cd80 (LWP 10412)):
[KCrash Handler]
#6  0x00007fdf509a57fe in __strstr_sse2 (haystack_start=0x0, needle_start=0x7fdf4977c19f "nouveau") at ../string/strstr.c:63
#7  0x00007fdf495d4b5a in QSGRenderContext::initialize(QOpenGLContext*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fdf49700618 in QQuickRenderControl::initialize(QOpenGLContext*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fdf315c735e in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#10 0x00007fdf50626169 in  () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#11 0x00007fdf5050c6e9 in KWin::Client::createDecoration(QRect const&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#12 0x00007fdf5050d0ad in KWin::Client::updateDecoration(bool, bool) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#13 0x00007fdf50569a56 in KWin::Client::manage(unsigned int, bool) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#14 0x00007fdf504efb1f in KWin::Workspace::createClient(unsigned int, bool) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#15 0x00007fdf50556e77 in KWin::Workspace::workspaceEvent(xcb_generic_event_t*) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#16 0x00007fdf4e84214f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fdf3a795c75 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#18 0x00007fdf3a796c0b in QXcbConnection::processXcbEvents() () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#19 0x00007fdf4e8735a9 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fdf4f1808ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007fdf4f185d4f in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007fdf4e8452c0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fdf4e84724c in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007fdf4e898a62 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fdf3a80e90d in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#26 0x00007fdf4e84300a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007fdf4e84b81c in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007fdf50ce6206 in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#29 0x00007fdf509363f1 in __libc_start_main (main=0x55cb8fee57e0, argc=3, argv=0x7ffeba667a28, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffeba667a18) at ../csu/libc-start.c:291
#30 0x000055cb8fee581a in _start ()

Possible duplicates by query: bug 354972.

Reported using DrKonqi