Application: systemsettings5 (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-21-generic x86_64
Distribution: Ubuntu 16.04 LTS

-- Information about the crash:
Bug #354164 sounds similar, but there it stated that the error is solved in Version 4.x (I don't remember exactly). So as I am using Version 5.5.5 it can't be the same bug, no?

Every time I go to the desktop settings and switch several times (not only twice as in the other bug) between some entries after 6-12 changes it crashes.

- Unusual behavior I noticed:
* Switching between Breeze and Breeze-dark doesn't work properly. This results in a mixup between the two and the layout changes every time I click on the other theme, click back to the active theme and apply the "change".
* Plasma crashed two or three times without me being able to tell why or in which situation.
* Grafics are disturbed (Some texts inside a button are longer than the button, in Discover the descriptions of the top presented items above are not readable because the overlap outside of the boxes, Ubuntu Software Center shows white text on white background which makes it unusable)
* Theres a cracking noise out of the speakers after login, when initialising KDE.

The crash can be reproduced every time.

-- Backtrace:
Application: Systemeinstellungen (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff1193da8c0 (LWP 11271))]

Thread 5 (Thread 0x7ff107abc700 (LWP 11272)):
#0  0x00007ff115af0e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ff1137d8c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007ff1137da8d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007ff109e0e629 in QXcbEventReader::run (this=0x1f054f0) at qxcbconnection.cpp:1253
#4  0x00007ff1161e684e in QThreadPrivate::start (arg=0x1f054f0) at thread/qthread_unix.cpp:331
#5  0x00007ff112f626fa in start_thread (arg=0x7ff107abc700) at pthread_create.c:333
#6  0x00007ff115afcb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7ff0ed2e8700 (LWP 11281)):
#0  0x00007ff112a4093f in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff112a4124b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff112a4142c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff11641da9b in QEventDispatcherGlib::processEvents (this=0x7ff0e01619d0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007ff1163c4dea in QEventLoop::exec (this=this@entry=0x7ff0ed2e7ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007ff1161e18a4 in QThread::exec (this=this@entry=0x49f4670) at thread/qthread.cpp:503
#6  0x00007ff114b603c5 in QQmlThreadPrivate::run (this=0x49f4670) at qml/ftw/qqmlthread.cpp:141
#7  0x00007ff1161e684e in QThreadPrivate::start (arg=0x49f4670) at thread/qthread_unix.cpp:331
#8  0x00007ff112f626fa in start_thread (arg=0x7ff0ed2e8700) at pthread_create.c:333
#9  0x00007ff115afcb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7ff0e7009700 (LWP 11282)):
#0  0x00007ff112a40d38 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff112a412c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff112a4142c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff11641da9b in QEventDispatcherGlib::processEvents (this=0x7ff0dc038220, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007ff1163c4dea in QEventLoop::exec (this=this@entry=0x7ff0e7008ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007ff1161e18a4 in QThread::exec (this=this@entry=0x2618cd0) at thread/qthread.cpp:503
#6  0x00007ff114b603c5 in QQmlThreadPrivate::run (this=0x2618cd0) at qml/ftw/qqmlthread.cpp:141
#7  0x00007ff1161e684e in QThreadPrivate::start (arg=0x2618cd0) at thread/qthread_unix.cpp:331
#8  0x00007ff112f626fa in start_thread (arg=0x7ff0e7009700) at pthread_create.c:333
#9  0x00007ff115afcb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7ff0eefe6700 (LWP 11285)):
#0  0x00007ff112a85a49 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff112a403f4 in g_main_context_release () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff112a412d6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff112a4142c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff11641da9b in QEventDispatcherGlib::processEvents (this=0x7ff0e8002000, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007ff1163c4dea in QEventLoop::exec (this=this@entry=0x7ff0eefe5ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007ff1161e18a4 in QThread::exec (this=this@entry=0x4882320) at thread/qthread.cpp:503
#7  0x00007ff114b603c5 in QQmlThreadPrivate::run (this=0x4882320) at qml/ftw/qqmlthread.cpp:141
#8  0x00007ff1161e684e in QThreadPrivate::start (arg=0x4882320) at thread/qthread_unix.cpp:331
#9  0x00007ff112f626fa in start_thread (arg=0x7ff0eefe6700) at pthread_create.c:333
#10 0x00007ff115afcb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7ff1193da8c0 (LWP 11271)):
[KCrash Handler]
#6  QtPrivate::RefCount::ref (this=0x4) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qrefcount.h:54
#7  QV4::Heap::String::toQString (this=<optimized out>) at jsruntime/qv4string_p.h:84
#8  QV4::String::toQString (this=<optimized out>) at jsruntime/qv4string_p.h:145
#9  QV4::Heap::StringObject::StringObject (this=<optimized out>, engine=0x4488790, val=...) at jsruntime/qv4stringobject.cpp:91
#10 0x00007ff114a20685 in QV4::MemoryManager::alloc<QV4::StringObject, QV4::ExecutionEngine*, QV4::Value> (arg2=..., arg1=0x4488790, this=<optimized out>) at jsruntime/qv4mm_p.h:126
#11 QV4::ExecutionEngine::newStringObject (this=0x4488790, value=...) at jsruntime/qv4engine.cpp:557
#12 0x00007ff114ab98b2 in QV4::Runtime::getProperty (engine=0x4488790, object=..., nameIndex=<optimized out>) at jsruntime/qv4runtime.cpp:686
#13 0x00007ff0f466edcd in ?? ()
#14 0x00007ff0e600a080 in ?? ()
#15 0x00007ff0e600a080 in ?? ()
#16 0x00007ff0e600a0e8 in ?? ()
#17 0xe2621468d7074600 in ?? ()
#18 0x0000000004488790 in ?? ()
#19 0x0000000000000001 in ?? ()
#20 0x00007ff0e600a068 in ?? ()
#21 0x00007ff0e600a070 in ?? ()
#22 0x0000000004488790 in ?? ()
#23 0x00007ff114a5c77a in QV4::SimpleScriptFunction::call (that=<optimized out>, callData=<optimized out>) at jsruntime/qv4functionobject.cpp:565
#24 0x00007ff114b457ff in QV4::Object::call (d=0x7ff0e600a018, this=<optimized out>) at ../../include/QtQml/5.5.1/QtQml/private/../../../../../src/qml/jsruntime/qv4object_p.h:305
#25 QQmlJavaScriptExpression::evaluate (this=this@entry=0x25b7a20, context=<optimized out>, function=..., callData=callData@entry=0x7ff0e600a018, isUndefined=isUndefined@entry=0x7fffffd6dbbc) at qml/qqmljavascriptexpression.cpp:158
#26 0x00007ff114b45d1d in QQmlJavaScriptExpression::evaluate (this=this@entry=0x25b7a20, context=<optimized out>, function=..., isUndefined=isUndefined@entry=0x7fffffd6dbbc) at qml/qqmljavascriptexpression.cpp:116
#27 0x00007ff114b4c83c in QQmlBinding::update (this=0x25b7a00, flags=...) at qml/qqmlbinding.cpp:194
#28 0x00007ff114b4ccfe in QQmlBinding::update (this=<optimized out>) at qml/qqmlbinding_p.h:97
#29 QQmlBinding::expressionChanged (e=<optimized out>) at qml/qqmlbinding.cpp:260
#30 0x00007ff114b28bae in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x0) at qml/qqmlnotifier.cpp:94
#31 0x00007ff114acb86c in QQmlData::signalEmitted (object=0x44bf370, index=30, a=0x0) at qml/qqmlengine.cpp:768
#32 0x00007ff1163f58a0 in QMetaObject::activate (sender=0x44bf370, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=argv@entry=0x0) at kernel/qobject.cpp:3599
#33 0x00007ff114ac3375 in QQmlVMEMetaObject::activate (this=this@entry=0x4a44aa0, object=<optimized out>, index=<optimized out>, args=args@entry=0x0) at qml/qqmlvmemetaobject.cpp:1325
#34 0x00007ff114ac4ede in QQmlVMEMetaObject::metaCall (this=0x4a44aa0, c=<optimized out>, _id=<optimized out>, a=<optimized out>) at qml/qqmlvmemetaobject.cpp:841
#35 0x00007ff114ac44a7 in QAbstractDynamicMetaObject::metaCall (a=0x7fffffd6f940, _id=42, c=QMetaObject::WriteProperty, this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/5.5.1/QtCore/private/qobject_p.h:421
#36 QQmlVMEMetaObject::metaCall (this=0x49fb270, c=QMetaObject::WriteProperty, _id=42, a=0x7fffffd6f940) at qml/qqmlvmemetaobject.cpp:969
#37 0x00007ff114adc5b0 in QQmlPropertyPrivate::write (object=object@entry=0x44bf370, property=..., value=..., context=context@entry=0x44bf210, flags=...) at qml/qqmlproperty.cpp:1313
#38 0x00007ff114ade0cb in QQmlPropertyPrivate::writeValueProperty (object=object@entry=0x44bf370, core=..., value=..., context=context@entry=0x44bf210, flags=...) at qml/qqmlproperty.cpp:1237
#39 0x00007ff114adeb1c in QQmlPropertyPrivate::writeBinding (object=0x44bf370, core=..., context=0x44bf210, expression=expression@entry=0x4a44f50, result=..., isUndefined=isUndefined@entry=false, flags=...) at qml/qqmlproperty.cpp:1597
#40 0x00007ff114b4c8cf in QQmlBinding::update (this=0x4a44f30, flags=...) at qml/qqmlbinding.cpp:198
#41 0x00007ff114b4ccfe in QQmlBinding::update (this=<optimized out>) at qml/qqmlbinding_p.h:97
#42 QQmlBinding::expressionChanged (e=<optimized out>) at qml/qqmlbinding.cpp:260
#43 0x00007ff114b28bae in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x0) at qml/qqmlnotifier.cpp:94
#44 0x00007ff114acb86c in QQmlData::signalEmitted (object=0x25b0ee0, index=31, a=0x0) at qml/qqmlengine.cpp:768
#45 0x00007ff1163f58a0 in QMetaObject::activate (sender=sender@entry=0x25b0ee0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3599
#46 0x00007ff1163f67d7 in QMetaObject::activate (sender=sender@entry=0x25b0ee0, m=m@entry=0x7ff11506d680 <QQuickLoader::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3578
#47 0x00007ff114eeffa5 in QQuickLoader::itemChanged (this=<optimized out>) at .moc/moc_qquickloader_p.cpp:321
#48 QQuickLoaderPrivate::incubatorStateChanged (this=0x25b0f10, status=QQmlIncubator::Ready) at items/qquickloader.cpp:666
#49 0x00007ff114ae535c in QQmlIncubatorPrivate::changeStatus (s=<optimized out>, this=0x2424750) at qml/qqmlincubator.cpp:701
#50 QQmlIncubatorPrivate::incubate (this=this@entry=0x2424750, i=...) at qml/qqmlincubator.cpp:368
#51 0x00007ff114ae562f in QQmlEnginePrivate::incubate (this=this@entry=0x4399610, i=..., forContext=forContext@entry=0x2390680) at qml/qqmlincubator.cpp:87
#52 0x00007ff114ae0eac in QQmlComponent::create (this=<optimized out>, incubator=..., context=<optimized out>, forContext=forContext@entry=0x0) at qml/qqmlcomponent.cpp:1068
#53 0x00007ff114eeed8a in QQuickLoaderPrivate::_q_sourceLoaded (this=this@entry=0x25b0f10) at items/qquickloader.cpp:714
#54 0x00007ff114eeef28 in QQuickLoaderPrivate::load (this=0x25b0f10) at items/qquickloader.cpp:597
#55 0x00007ff114b55ed2 in QQmlObjectCreator::finalize (this=0x4865030, interrupt=...) at qml/qqmlobjectcreator.cpp:1207
#56 0x00007ff114ae086e in QQmlComponentPrivate::complete (enginePriv=0x4399610, state=0x4c30d00) at qml/qqmlcomponent.cpp:928
#57 0x00007ff114ae0937 in QQmlComponentPrivate::completeCreate (this=0x4c30c60) at qml/qqmlcomponent.cpp:964
#58 0x00007ff114ae07a0 in QQmlComponent::create (this=0x25aec90, context=0x4429e20) at qml/qqmlcomponent.cpp:791
#59 0x00007ff114ef616d in QQuickView::continueExecute (this=this@entry=0x4cd7130) at items/qquickview.cpp:476
#60 0x00007ff114ef68ad in QQuickViewPrivate::execute (this=0x24e19b0) at items/qquickview.cpp:124
#61 0x00007ff114ef69fa in QQuickView::setSource (this=this@entry=0x4cd7130, url=...) at items/qquickview.cpp:253
#62 0x00007ff0f836fb5b in KWin::Compositing::EffectView::init (this=this@entry=0x4cd7130, type=type@entry=KWin::Compositing::EffectView::DesktopEffectsView) at /build/kwin-2AFxJo/kwin-5.5.5/kcmkwin/kwincompositing/model.cpp:612
#63 0x00007ff0f836fe24 in KWin::Compositing::EffectView::EffectView (this=0x4cd7130, type=KWin::Compositing::EffectView::DesktopEffectsView, parent=<optimized out>) at /build/kwin-2AFxJo/kwin-5.5.5/kcmkwin/kwincompositing/model.cpp:592
#64 0x00007ff0f837503d in KWinCompositingKCM::KWinCompositingKCM (this=this@entry=0x4825160, parent=parent@entry=0x4470ee0, args=..., viewType=viewType@entry=KWin::Compositing::EffectView::DesktopEffectsView) at /build/kwin-2AFxJo/kwin-5.5.5/kcmkwin/kwincompositing/main.cpp:259
#65 0x00007ff0f837634d in KWinDesktopEffects::KWinDesktopEffects (args=..., parent=0x4470ee0, this=0x4825160) at /build/kwin-2AFxJo/kwin-5.5.5/kcmkwin/kwincompositing/main.cpp:56
#66 KPluginFactory::createInstance<KWinDesktopEffects, QWidget> (parentWidget=<optimized out>, parent=<optimized out>, args=...) at /usr/include/KF5/KCoreAddons/kpluginfactory.h:477
#67 0x00007ff116656490 in KPluginFactory::create (this=this@entry=0x240f060, iface=0x7ff1185a9ec8 "KCModule", parentWidget=parentWidget@entry=0x0, parent=parent@entry=0x4470ee0, args=..., keyword=...) at ../../../src/lib/plugin/kpluginfactory.cpp:145
#68 0x00007ff118f48624 in KPluginFactory::create<KCModule> (args=..., keyword=..., parent=0x4470ee0, parentWidget=0x0, this=0x240f060) at /usr/include/KF5/KCoreAddons/kpluginfactory.h:519
#69 KService::createInstance<KCModule> (error=0x7fffffd71f60, args=..., parent=0x4470ee0, parentWidget=0x0, this=0x22714a0) at /usr/include/KF5/KService/kservice.h:526
#70 KService::createInstance<KCModule> (error=0x7fffffd71f60, args=..., parent=0x4470ee0, this=<optimized out>) at /usr/include/KF5/KService/kservice.h:501
#71 KCModuleLoader::loadModule (mod=..., report=report@entry=KCModuleLoader::Inline, parent=0x4470ee0, args=...) at ../../src/kcmoduleloader.cpp:92
#72 0x00007ff118f4ec0f in KCModuleProxyPrivate::loadModule (this=this@entry=0x48d0a00) at ../../src/kcmoduleproxy.cpp:109
#73 0x00007ff118f4f895 in KCModuleProxy::realModule (this=this@entry=0x4470ee0) at ../../src/kcmoduleproxy.cpp:82
#74 0x00007ff118f4fe03 in KCModuleProxy::showEvent (this=0x4470ee0, ev=0x7fffffd72500) at ../../src/kcmoduleproxy.cpp:195
#75 0x00007ff1178dcf88 in QWidget::event (this=0x4470ee0, event=0x7fffffd72500) at kernel/qwidget.cpp:9044
#76 0x00007ff11789a05c in QApplicationPrivate::notify_helper (this=this@entry=0x1eed5f0, receiver=receiver@entry=0x4470ee0, e=e@entry=0x7fffffd72500) at kernel/qapplication.cpp:3716
#77 0x00007ff11789f516 in QApplication::notify (this=0x7fffffd73ca0, receiver=0x4470ee0, e=0x7fffffd72500) at kernel/qapplication.cpp:3499
#78 0x00007ff1163c762b in QCoreApplication::notifyInternal (this=0x7fffffd73ca0, receiver=receiver@entry=0x4470ee0, event=event@entry=0x7fffffd72500) at kernel/qcoreapplication.cpp:965
#79 0x00007ff1178d9a86 in QCoreApplication::sendEvent (event=0x7fffffd72500, receiver=0x4470ee0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#80 QWidgetPrivate::show_helper (this=0x23cfc90) at kernel/qwidget.cpp:7822
#81 0x00007ff1178d9656 in QWidgetPrivate::show_recursive (this=<optimized out>) at kernel/qwidget.cpp:7693
#82 0x00007ff1178d9776 in QWidgetPrivate::showChildren (this=this@entry=0x4608dc0, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:8189
#83 0x00007ff1178d980f in QWidgetPrivate::show_helper (this=this@entry=0x4608dc0) at kernel/qwidget.cpp:7769
#84 0x00007ff1178dc5fd in QWidget::setVisible (this=0x4611200, visible=<optimized out>) at kernel/qwidget.cpp:8108
#85 0x00007ff1178d9788 in QWidgetPrivate::showChildren (this=this@entry=0x3dea2e0, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:8191
#86 0x00007ff1178d980f in QWidgetPrivate::show_helper (this=this@entry=0x3dea2e0) at kernel/qwidget.cpp:7769
#87 0x00007ff1178dc5fd in QWidget::setVisible (this=0x3d06460, visible=<optimized out>) at kernel/qwidget.cpp:8108
#88 0x00007ff1178bf0e9 in QStackedLayout::setCurrentIndex (this=0x2275ce0, index=2) at kernel/qstackedlayout.cpp:319
#89 0x00007ff1178bf2d4 in QStackedLayout::setCurrentWidget (this=0x2275ce0, widget=widget@entry=0x3d06460) at kernel/qstackedlayout.cpp:374
#90 0x00007ff117a38f81 in QStackedWidget::setCurrentWidget (this=<optimized out>, widget=widget@entry=0x3d06460) at widgets/qstackedwidget.cpp:244
#91 0x00007ff117eadac5 in KPageViewPrivate::_k_pageSelected (this=0x227ff50, index=..., previous=...) at ../../src/kpageview.cpp:246
#92 0x00007ff1163f5fca in QMetaObject::activate (sender=sender@entry=0x4eb4d00, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fffffd72a80) at kernel/qobject.cpp:3713
#93 0x00007ff1163f67d7 in QMetaObject::activate (sender=sender@entry=0x4eb4d00, m=m@entry=0x7ff11660d160 <QItemSelectionModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fffffd72a80) at kernel/qobject.cpp:3578
#94 0x00007ff116377fc7 in QItemSelectionModel::selectionChanged (this=this@entry=0x4eb4d00, _t1=..., _t2=...) at .moc/moc_qitemselectionmodel.cpp:473
#95 0x00007ff11637c3bc in QItemSelectionModel::emitSelectionChanged (this=this@entry=0x4eb4d00, newSelection=..., oldSelection=...) at itemmodels/qitemselectionmodel.cpp:1857
#96 0x00007ff11637e8a4 in QItemSelectionModel::select (this=0x4eb4d00, selection=..., command=...) at itemmodels/qitemselectionmodel.cpp:1288
#97 0x00007ff117b18a4f in QListView::setSelection (this=<optimized out>, rect=..., command=...) at itemviews/qlistview.cpp:1352
#98 0x00007ff117afa01d in QAbstractItemView::mousePressEvent (this=0x229ff10, event=<optimized out>) at itemviews/qabstractitemview.cpp:1733
#99 0x00007ff1178dd3cf in QWidget::event (this=this@entry=0x229ff10, event=event@entry=0x7fffffd733f0) at kernel/qwidget.cpp:8674
#100 0x00007ff1179dbb5e in QFrame::event (this=0x229ff10, e=0x7fffffd733f0) at widgets/qframe.cpp:540
#101 0x00007ff117b015db in QAbstractItemView::viewportEvent (this=0x229ff10, event=0x7fffffd733f0) at itemviews/qabstractitemview.cpp:1685
#102 0x00007ff1163c7412 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x1eed5f0, receiver=receiver@entry=0x487d320, event=event@entry=0x7fffffd733f0) at kernel/qcoreapplication.cpp:1072
#103 0x00007ff11789a03c in QApplicationPrivate::notify_helper (this=this@entry=0x1eed5f0, receiver=receiver@entry=0x487d320, e=e@entry=0x7fffffd733f0) at kernel/qapplication.cpp:3712
#104 0x00007ff11789fc19 in QApplication::notify (this=<optimized out>, receiver=0x487d320, e=0x7fffffd733f0) at kernel/qapplication.cpp:3276
#105 0x00007ff1163c762b in QCoreApplication::notifyInternal (this=0x7fffffd73ca0, receiver=receiver@entry=0x487d320, event=event@entry=0x7fffffd733f0) at kernel/qcoreapplication.cpp:965
#106 0x00007ff11789eb32 in QCoreApplication::sendSpontaneousEvent (event=0x7fffffd733f0, receiver=0x487d320) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#107 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x487d320, event=event@entry=0x7fffffd733f0, alienWidget=alienWidget@entry=0x487d320, nativeWidget=0x229ff10, buttonDown=buttonDown@entry=0x7ff117dcab20 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2770
#108 0x00007ff1178f757b in QWidgetWindow::handleMouseEvent (this=this@entry=0x3cc2130, event=event@entry=0x7fffffd73800) at kernel/qwidgetwindow.cpp:555
#109 0x00007ff1178f9b3b in QWidgetWindow::event (this=0x3cc2130, event=0x7fffffd73800) at kernel/qwidgetwindow.cpp:210
#110 0x00007ff11789a05c in QApplicationPrivate::notify_helper (this=this@entry=0x1eed5f0, receiver=receiver@entry=0x3cc2130, e=e@entry=0x7fffffd73800) at kernel/qapplication.cpp:3716
#111 0x00007ff11789f516 in QApplication::notify (this=0x7fffffd73ca0, receiver=0x3cc2130, e=0x7fffffd73800) at kernel/qapplication.cpp:3499
#112 0x00007ff1163c762b in QCoreApplication::notifyInternal (this=0x7fffffd73ca0, receiver=receiver@entry=0x3cc2130, event=event@entry=0x7fffffd73800) at kernel/qcoreapplication.cpp:965
#113 0x00007ff1172e9521 in QCoreApplication::sendSpontaneousEvent (event=0x7fffffd73800, receiver=0x3cc2130) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#114 QGuiApplicationPrivate::processMouseEvent (e=0x44011d0) at kernel/qguiapplication.cpp:1804
#115 0x00007ff1172eb1e5 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x44011d0) at kernel/qguiapplication.cpp:1596
#116 0x00007ff1172cef38 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:625
#117 0x00007ff109e3ff10 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#118 0x00007ff112a41127 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#119 0x00007ff112a41380 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#120 0x00007ff112a4142c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#121 0x00007ff11641da7f in QEventDispatcherGlib::processEvents (this=0x1f31010, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#122 0x00007ff1163c4dea in QEventLoop::exec (this=this@entry=0x7fffffd73b80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#123 0x00007ff1163cce8c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#124 0x00007ff1172e0c3c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1542
#125 0x00007ff117896495 in QApplication::exec () at kernel/qapplication.cpp:2976
#126 0x000000000040f7a1 in main (argc=1, argv=<optimized out>) at /build/systemsettings-3AmRXd/systemsettings-5.5.5/app/main.cpp:55

Possible duplicates by query: bug 361842, bug 353795.

Reported using DrKonqi