Unfortunately the backtrace is lacking debug symbols. If you are able to reproduce please install debug packages and attach a new backtrace.

*** Bug 374117 has been marked as a duplicate of this bug. ***

(In reply to Martin Gräßlin from comment #1)
> Unfortunately the backtrace is lacking debug symbols. If you are able to
> reproduce please install debug packages and attach a new backtrace.

Which debug packages do I install?  (In reply to Martin Gräßlin from comment #1)
> Unfortunately the backtrace is lacking debug symbols. If you are able to
> reproduce please install debug packages and attach a new backtrace.

Ok I installed the (In reply to Martin Gräßlin from comment #1)
> Unfortunately the backtrace is lacking debug symbols. If you are able to
> reproduce please install debug packages and attach a new backtrace.

I Can reproduce the bug every time, but after installing the kde debug packages from the opensuse repos i still get the same backtrace.  Am I missing a debug package?  I installed the packages from here: https://en.opensuse.org/openSUSE:Bugreport_KDE#Useful_Crash_Reports

I'm sorry, but I do not know which packages are required on opensuse.

Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f75c31b3940 (LWP 20048))]

Thread 6 (Thread 0x7f757effd700 (LWP 20068)):
#0  0x00007f75c2be20af in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f75bef6993b in QTWTF::TCMalloc_PageHeap::scavengerThread() (this=0x7f75bf24fea0 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f75bef69969 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f75c2bdd734 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f75c291bd3d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f7585833700 (LWP 20065)):
#0  0x00007f75c2914b03 in select () at /lib64/libc.so.6
#1  0x00007f75bffe7849 in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) (nfds=21, fdread=0x7f7580000a78, fdwrite=0x7f7580000d08, fdexcept=0x7f7580000f98, orig_timeout=0x0) at kernel/qcore_unix.cpp:75
#2  0x00007f75bffe90c3 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) (this=this@entry=0x7f75800008e0, flags=..., flags@entry=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:196
#3  0x00007f75bffe9527 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f75800008c0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#4  0x00007f75bff98fdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f7585832c70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f75bfdd3f1a in QThread::exec() (this=this@entry=0x13ed9d0) at thread/qthread.cpp:500
#6  0x00007f75ba9c09b8 in QQmlThreadPrivate::run() (this=0x13ed9d0) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007f75bfdd89e9 in QThreadPrivate::start(void*) (arg=0x13ed9d0) at thread/qthread_unix.cpp:341
#8  0x00007f75c2bdd734 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f75c291bd3d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f7586307700 (LWP 20064)):
#0  0x00007f75c2be20af in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f758d669533 in  () at /usr/lib64/dri/r600_dri.so
#2  0x00007f758d668d57 in  () at /usr/lib64/dri/r600_dri.so
#3  0x00007f75c2bdd734 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f75c291bd3d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f7598c55700 (LWP 20061)):
#0  0x00007f75c2914b03 in select () at /lib64/libc.so.6
#1  0x00007f75bffe7849 in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) (nfds=14, fdread=0x7f7590000a78, fdwrite=0x7f7590000d08, fdexcept=0x7f7590000f98, orig_timeout=0x0) at kernel/qcore_unix.cpp:75
#2  0x00007f75bffe90c3 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) (this=this@entry=0x7f75900008e0, flags=..., flags@entry=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:196
#3  0x00007f75bffe9527 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f75900008c0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#4  0x00007f75bff98fdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f7598c54c70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f75bfdd3f1a in QThread::exec() (this=this@entry=0xe9bd80) at thread/qthread.cpp:500
#6  0x00007f75ba9c09b8 in QQmlThreadPrivate::run() (this=0xe9bd80) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007f75bfdd89e9 in QThreadPrivate::start(void*) (arg=0xe9bd80) at thread/qthread_unix.cpp:341
#8  0x00007f75c2bdd734 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f75c291bd3d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f75a3972700 (LWP 20053)):
#0  0x00007f75c2914b03 in select () at /lib64/libc.so.6
#1  0x00007f75bffe7849 in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) (nfds=8, fdread=0x7f759c000a78, fdwrite=0x7f759c000d08, fdexcept=0x7f759c000f98, orig_timeout=0x0) at kernel/qcore_unix.cpp:75
#2  0x00007f75bffe90c3 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) (this=this@entry=0x7f759c0008e0, flags=..., flags@entry=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:196
#3  0x00007f75bffe9527 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f759c0008c0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#4  0x00007f75bff98fdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f75a3971c60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f75bfdd3f1a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007f75b9ba11d5 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007f75bfdd89e9 in QThreadPrivate::start(void*) (arg=0x7f75b9e09ce0) at thread/qthread_unix.cpp:341
#8  0x00007f75c2bdd734 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f75c291bd3d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f75c31b3940 (LWP 20048)):
[KCrash Handler]
#6  0x0000000000000030 in  ()
#7  0x00007f75bffc9950 in QObject::connect(QObject const*, char const*, QObject const*, char const*, Qt::ConnectionType) (sender=0x1edfca0, signal=signal@entry=0x7f75beffb2e4 "2destroyed(QObject*)", receiver=0x14f69d0, method=method@entry=0x7f75beffb2c6 "1_q_objectDestroyed(QObject*)", type=type@entry=Qt::AutoConnection) at kernel/qobject.cpp:2642
#8  0x00007f75befad7eb in QScriptEnginePrivate::qobjectData(QObject*) (this=this@entry=0x1bbf630, object=object@entry=0x1edfca0) at api/qscriptengine.cpp:1573
#9  0x00007f75befad8c4 in QScriptEnginePrivate::newQObject(QObject*, QScriptEngine::ValueOwnership, QFlags<QScriptEngine::QObjectWrapOption> const&) (this=this@entry=0x1bbf630, object=object@entry=0x1edfca0, ownership=ownership@entry=QScriptEngine::QtOwnership, options=...) at api/qscriptengine.cpp:1504
#10 0x00007f75befadb82 in QScriptEngine::newQObject(QObject*, QScriptEngine::ValueOwnership, QFlags<QScriptEngine::QObjectWrapOption> const&) (this=<optimized out>, object=0x1edfca0, ownership=ownership@entry=QScriptEngine::QtOwnership, options=...) at api/qscriptengine.cpp:2281
#11 0x00007f75c252e91c in KWin::effectWindowToScriptValue(QScriptEngine*, KWin::EffectWindow* const&) (eng=<optimized out>, window=<optimized out>) at /usr/src/debug/kwin-5.8.3/scripting/scriptedeffect.cpp:417
#12 0x00007f75befaded2 in QScriptEnginePrivate::create(QTJSC::ExecState*, int, void const*) (exec=exec@entry=0x1be53a8, type=1059, ptr=ptr@entry=0x7fffd5f0d958) at api/qscriptengine.cpp:3081
#13 0x00007f75befd0d6e in QScript::QObjectConnectionManager::execute(int, void**) (this=this@entry=0x1a5e880, slotIndex=slotIndex@entry=6, argv=argv@entry=0x7fffd5f0d960) at bridge/qscriptqobject.cpp:2173
#14 0x00007f75befd8425 in QScript::QObjectConnectionManager::qt_metacall(QMetaObject::Call, int, void**) (_a=0x7fffd5f0d960, _id=6, _c=QMetaObject::InvokeMetaMethod, _o=0x1a5e880) at bridge/qscriptqobject.cpp:2070
#15 0x00007f75befd8425 in QScript::QObjectConnectionManager::qt_metacall(QMetaObject::Call, int, void**) (this=0x1a5e880, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0x7fffd5f0d960) at bridge/qscriptqobject.cpp:2099
#16 0x00007f75bffc5139 in QMetaObject::activate(QObject*, int, int, void**) (sender=0x19c0040, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7fffd5f0d960) at kernel/qobject.cpp:3745
#17 0x00007f75bffc5717 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=<optimized out>, m=m@entry=0x7f75bf99fa60 <KWin::EffectsHandler::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7fffd5f0d960) at kernel/qobject.cpp:3595
#18 0x00007f75bf792498 in KWin::EffectsHandler::desktopPresenceChanged(KWin::EffectWindow*, int, int) (this=<optimized out>, _t1=0x1edfca0, _t2=0, _t3=1) at /usr/src/debug/kwin-5.8.3/build/libkwineffects/moc_kwineffects.cpp:1299
#19 0x00007f75bf793913 in KWin::EffectsHandler::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /usr/src/debug/kwin-5.8.3/build/libkwineffects/moc_kwineffects.cpp:584
#20 0x00007f75bffc6166 in QObject::event(QEvent*) (this=0x19c0040, e=<optimized out>) at kernel/qobject.cpp:1256
#21 0x00007f75c0ca1e3c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#22 0x00007f75c0ca649a in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#23 0x00007f75bff9afc5 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x19c0040, event=event@entry=0x20d8b50) at kernel/qcoreapplication.cpp:1015
#24 0x00007f75bff9cdaa in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (event=0x20d8b50, receiver=<optimized out>) at kernel/qcoreapplication.h:225
#25 0x00007f75bff9cdaa in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xc01650) at kernel/qcoreapplication.cpp:1650
#26 0x00007f75bffe94b4 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0xc84b90, flags=flags@entry=...) at kernel/qeventdispatcher_unix.cpp:579
#27 0x00007f75aa60094d in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at eventdispatchers/qunixeventdispatcher.cpp:62
#28 0x00007f75bff98fdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fffd5f0deb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#29 0x00007f75bffa0ec6 in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1285
#30 0x00007f75c2dfb9cc in kdemain(int, char**) (argc=3, argv=0x7fffd5f0e138) at /usr/src/debug/kwin-5.8.3/main_x11.cpp:466
#31 0x00007f75c28526e5 in __libc_start_main () at /lib64/libc.so.6
#32 0x0000000000400809 in _start () at ../sysdeps/x86_64/start.S:118

Created attachment 103020 [details]
Backtrace

nice backtrace!

*** This bug has been marked as a duplicate of bug 363224 ***