Application: kwin_x11 (5.9.5)

Qt Version: 5.8.0
Frameworks Version: 5.34.0
Operating System: Linux 4.9.28-1-MANJARO x86_64
Distribution: "Manjaro Linux"

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

Nothing yet, just booted into OS.

Not using a login manager.

Start KDE with "exec startkde" in "~/.xinitrc"

In "~/.config/autostart/" I have "steam.desktop" and "org.kde.yakuake.desktop"

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f50785bc840 (LWP 2562))]

Thread 10 (Thread 0x7f503b60d700 (LWP 2816)):
#0  0x00007f50711e8756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f50745a4234 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f50745a4279 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f50711e22e7 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f507802754f in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7f503c60f700 (LWP 2814)):
#0  0x00007f50711e8756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5042bd85eb in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007f5042bd8317 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007f50711e22e7 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f507802754f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f503ce10700 (LWP 2813)):
#0  0x00007f50711e8756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5042bd85eb in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007f5042bd8317 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007f50711e22e7 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f507802754f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f503d611700 (LWP 2812)):
#0  0x00007f50711e8756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5042bd85eb in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007f5042bd8317 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007f50711e22e7 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f507802754f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f503de12700 (LWP 2811)):
#0  0x00007f50711e8756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5042bd85eb in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007f5042bd8317 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007f50711e22e7 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f507802754f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f503e81a700 (LWP 2810)):
#0  0x00007f50711e8756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5042bd85eb in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007f5042bd8317 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007f50711e22e7 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f507802754f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f50562c2700 (LWP 2798)):
#0  0x00007f507801d76b in ppoll () at /usr/lib/libc.so.6
#1  0x00007f507566b329 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f507566c99a in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f50756198ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f507543ba73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f506fef8025 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007f50754406d8 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f50711e22e7 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f507802754f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f505c9ca700 (LWP 2679)):
#0  0x00007f507801d76b in ppoll () at /usr/lib/libc.so.6
#1  0x00007f507566b329 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f507566c99a in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f50756198ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f507543ba73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f506f089125 in  () at /usr/lib/libQt5DBus.so.5
#6  0x00007f50754406d8 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f50711e22e7 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f507802754f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f505eb42700 (LWP 2597)):
#0  0x00007f507801d67d in poll () at /usr/lib/libc.so.6
#1  0x00007f507711f8e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f5077121679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f505fc3d239 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f50754406d8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f50711e22e7 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f507802754f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f50785bc840 (LWP 2562)):
[KCrash Handler]
#6  0x0000000000000000 in  ()
#7  0x00007f507564d420 in QObject::connect(QObject const*, char const*, QObject const*, char const*, Qt::ConnectionType) () at /usr/lib/libQt5Core.so.5
#8  0x00007f50745e676f in  () at /usr/lib/libQt5Script.so.5
#9  0x00007f50745e6844 in  () at /usr/lib/libQt5Script.so.5
#10 0x00007f50745e6ac2 in QScriptEngine::newQObject(QObject*, QScriptEngine::ValueOwnership, QFlags<QScriptEngine::QObjectWrapOption> const&) () at /usr/lib/libQt5Script.so.5
#11 0x00007f5077c11e7c in  () at /usr/lib/libkwin.so.5
#12 0x00007f50745e6d75 in  () at /usr/lib/libQt5Script.so.5
#13 0x00007f507460f826 in  () at /usr/lib/libQt5Script.so.5
#14 0x00007f5074617af1 in  () at /usr/lib/libQt5Script.so.5
#15 0x00007f5075646f14 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#16 0x00007f5074dfbe08 in KWin::EffectsHandler::desktopPresenceChanged(KWin::EffectWindow*, int, int) () at /usr/lib/libkwineffects.so.10
#17 0x00007f5074dfd7c1 in  () at /usr/lib/libkwineffects.so.10
#18 0x00007f5075647bd9 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#19 0x00007f507630634c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#20 0x00007f507630db61 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#21 0x00007f507561b470 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#22 0x00007f507561dbfd in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#23 0x00007f507566c7c7 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#24 0x00007f505fc9dded in  () at /usr/lib/libQt5XcbQpa.so.5
#25 0x00007f50756198ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#26 0x00007f5075621e14 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#27 0x00007f50782ec391 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#28 0x00007f5077f5b511 in __libc_start_main () at /usr/lib/libc.so.6
#29 0x000000000040069a in _start ()

Reported using DrKonqi