Bug 364076

Summary: Crash seelcting desktop settings
Product: [Plasma] kwin Reporter: Con Kolivas <kde>
Component: compositingAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version First Reported In: 5.5.5   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Con Kolivas 2016-06-07 23:22:10 UTC 
Application: systemsettings5 (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.5.0-ck1 x86_64
Distribution: Ubuntu 16.04 LTS

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

Cycling through various system settings, while clicking between desktop effects and screen edges systemsettings5 crashed.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fde5183b900 (LWP 6267))]

Thread 4 (Thread 0x7fde3f6ec700 (LWP 6268)):
#0  0x00007fde4df5be8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fde4bc43c62 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7fde3f6ebbc0) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x00007fde4bc43c62 in _xcb_conn_wait (c=c@entry=0x1562d90, cond=cond@entry=0x1562dd0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3  0x00007fde4bc458d7 in xcb_wait_for_event (c=0x1562d90) at ../../src/xcb_in.c:693
#4  0x00007fde42070629 in QXcbEventReader::run() (this=0x1570f90) at qxcbconnection.cpp:1253
#5  0x00007fde4e65184e in QThreadPrivate::start(void*) (arg=0x1570f90) at thread/qthread_unix.cpp:331
#6  0x00007fde4b3cd6fa in start_thread (arg=0x7fde3f6ec700) at pthread_create.c:333
#7  0x00007fde4df67b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fde2ce09700 (LWP 6340)):
#0  0x00007fde4df5be8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fde4aeac31c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fde212ff930, timeout=<optimized out>, context=0x7fde212fb5d0) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:4135
#2  0x00007fde4aeac31c in g_main_context_iterate (context=context@entry=0x7fde212fb5d0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3835
#3  0x00007fde4aeac42c in g_main_context_iteration (context=0x7fde212fb5d0, may_block=may_block@entry=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00007fde4e888a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fde20347830, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fde4e82fdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fde2ce08ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fde4e64c8a4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fde4cfcb3c5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fde4e65184e in QThreadPrivate::start(void*) (arg=0x2975850) at thread/qthread_unix.cpp:331
#9  0x00007fde4b3cd6fa in start_thread (arg=0x7fde2ce09700) at pthread_create.c:333
#10 0x00007fde4df67b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fde1b7ff700 (LWP 6346)):
#0  0x00007fde4df5be8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fde4aeac31c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fde1415b6c0, timeout=<optimized out>, context=0x7fde14060bb0) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:4135
#2  0x00007fde4aeac31c in g_main_context_iterate (context=context@entry=0x7fde14060bb0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3835
#3  0x00007fde4aeac42c in g_main_context_iteration (context=0x7fde14060bb0, may_block=may_block@entry=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00007fde4e888a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fde1403ba70, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fde4e82fdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fde1b7feca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fde4e64c8a4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fde4cfcb3c5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fde4e65184e in QThreadPrivate::start(void*) (arg=0x1c17f80) at thread/qthread_unix.cpp:331
#9  0x00007fde4b3cd6fa in start_thread (arg=0x7fde1b7ff700) at pthread_create.c:333
#10 0x00007fde4df67b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fde5183b900 (LWP 6267)):
[KCrash Handler]
#6  0x00007fde4cee46d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fde4ce8b685 in QV4::ExecutionEngine::newStringObject(QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fde4cf248b2 in QV4::Runtime::getProperty(QV4::ExecutionEngine*, QV4::Value const&, int) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fde2ceb124d in  ()
#10 0x00007fde0a7a7080 in  ()
#11 0x00007fde0a7a7080 in  ()
#12 0x00007fde0a7a70e8 in  ()
#13 0xc8432c9e55de1700 in  ()#14 0x0000000002b0d000 in  ()
#15 0x0000000000000001 in  ()
#16 0x00007fde0a7a7068 in  ()
#17 0x00007fde0a7a7070 in  ()
#18 0x0000000002b0d000 in  ()
#19 0x00007fde4cec777a in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x00007fde4cfb07ff in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#21 0x00007fde4cfb0d1d in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#22 0x00007fde4cfb783c in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#23 0x00007fde4cfb7cfe in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#24 0x00007fde4cf93bae in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#25 0x00007fde4cf3686c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#26 0x00007fde4e8608a0 in QMetaObject::activate(QObject*, int, int, void**) (sender=0x1c41d60, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3599
#27 0x00007fde4cf2fede in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#28 0x00007fde4cf2f4a7 in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#29 0x00007fde4cf475b0 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#30 0x00007fde4cf490cb in QQmlPropertyPrivate::writeValueProperty(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#31 0x00007fde4cf49b1c in QQmlPropertyPrivate::writeBinding(QObject*, QQmlPropertyData const&, QQmlContextData*, QQmlJavaScriptExpression*, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#32 0x00007fde4cfb78cf in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#33 0x00007fde4cfb7cfe in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#34 0x00007fde4cf93bae in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#35 0x00007fde4cf3686c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#36 0x00007fde4e8608a0 in QMetaObject::activate(QObject*, int, int, void**) (sender=0x1c42810, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3599
#37 0x00007fde4d35afa5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#38 0x00007fde4cf5035c in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#39 0x00007fde4cf5062f in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#40 0x00007fde4cf4beac in QQmlComponent::create(QQmlIncubator&, QQmlContext*, QQmlContext*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#41 0x00007fde4d359d8a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#42 0x00007fde4d359f28 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#43 0x00007fde4cfc0ed2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#44 0x00007fde4cf4b86e in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#45 0x00007fde4cf4b937 in QQmlComponentPrivate::completeCreate() () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#46 0x00007fde4cf4b7a0 in QQmlComponent::create(QQmlContext*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#47 0x00007fde4d36116d in QQuickView::continueExecute() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#48 0x00007fde4d3618ad in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#49 0x00007fde30677b5b in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kwincompositing.so
#50 0x00007fde30677e24 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kwincompositing.so
#51 0x00007fde3067d03d in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kwincompositing.so
#52 0x00007fde3067e34d in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kwincompositing.so
#53 0x00007fde4eac1490 in KPluginFactory::create(char const*, QWidget*, QObject*, QList<QVariant> const&, QString const&) (this=this@entry=0x1975740, iface=0x7fde50a14ec8 <qt_meta_stringdata_KCModule+360> "KCModule", parentWidget=parentWidget@entry=0x0, parent=parent@entry=0x2736e50, args=..., keyword=...) at ../../../src/lib/plugin/kpluginfactory.cpp:145
#54 0x00007fde513b3624 in KCModuleLoader::loadModule(KCModuleInfo const&, KCModuleLoader::ErrorReporting, QWidget*, QStringList const&) (args=..., keyword=..., parent=0x2736e50, parentWidget=0x0, this=0x1975740) at /usr/include/KF5/KCoreAddons/kpluginfactory.h:519
#55 0x00007fde513b3624 in KCModuleLoader::loadModule(KCModuleInfo const&, KCModuleLoader::ErrorReporting, QWidget*, QStringList const&) (error=0x7ffe7027f7d0, args=..., parent=0x2736e50, parentWidget=0x0, this=0x1913f90) at /usr/include/KF5/KService/kservice.h:526
#56 0x00007fde513b3624 in KCModuleLoader::loadModule(KCModuleInfo const&, KCModuleLoader::ErrorReporting, QWidget*, QStringList const&) (error=0x7ffe7027f7d0, args=..., parent=0x2736e50, this=<optimized out>) at /usr/include/KF5/KService/kservice.h:501
#57 0x00007fde513b3624 in KCModuleLoader::loadModule(KCModuleInfo const&, KCModuleLoader::ErrorReporting, QWidget*, QStringList const&) (mod=..., report=report@entry=KCModuleLoader::Inline, parent=0x2736e50, args=...) at ../../src/kcmoduleloader.cpp:92
#58 0x00007fde513b9c0f in KCModuleProxyPrivate::loadModule() (this=this@entry=0x28447e0) at ../../src/kcmoduleproxy.cpp:109
#59 0x00007fde513ba895 in KCModuleProxy::realModule() const (this=this@entry=0x2736e50) at ../../src/kcmoduleproxy.cpp:82
#60 0x00007fde513bae03 in KCModuleProxy::showEvent(QShowEvent*) (this=0x2736e50, ev=0x7ffe7027fd70) at ../../src/kcmoduleproxy.cpp:195
#61 0x00007fde4fd47f88 in QWidget::event(QEvent*) (this=0x2736e50, event=0x7ffe7027fd70) at kernel/qwidget.cpp:9044
#62 0x00007fde4fd0505c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x153b280, receiver=receiver@entry=0x2736e50, e=e@entry=0x7ffe7027fd70) at kernel/qapplication.cpp:3716
#63 0x00007fde4fd0a516 in QApplication::notify(QObject*, QEvent*) (this=0x7ffe70281510, receiver=0x2736e50, e=0x7ffe7027fd70) at kernel/qapplication.cpp:3499
#64 0x00007fde4e83262b in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffe70281510, receiver=receiver@entry=0x2736e50, event=event@entry=0x7ffe7027fd70) at kernel/qcoreapplication.cpp:965
#65 0x00007fde4fd44a86 in QWidgetPrivate::show_helper() (event=0x7ffe7027fd70, receiver=0x2736e50) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#66 0x00007fde4fd44a86 in QWidgetPrivate::show_helper() (this=0x2938b10) at kernel/qwidget.cpp:7822
#67 0x00007fde4fd44656 in QWidgetPrivate::show_recursive() (this=<optimized out>) at kernel/qwidget.cpp:7693
#68 0x00007fde4fd44776 in QWidgetPrivate::showChildren(bool) (this=this@entry=0x1b753f0, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:8189
#69 0x00007fde4fd4480f in QWidgetPrivate::show_helper() (this=this@entry=0x1b753f0) at kernel/qwidget.cpp:7769
#70 0x00007fde4fd475fd in QWidget::setVisible(bool) (this=0x2737250, visible=<optimized out>) at kernel/qwidget.cpp:8108
#71 0x00007fde4fd44788 in QWidgetPrivate::showChildren(bool) (this=this@entry=0x245c250, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:8191
#72 0x00007fde4fd4480f in QWidgetPrivate::show_helper() (this=this@entry=0x245c250) at kernel/qwidget.cpp:7769
#73 0x00007fde4fd475fd in QWidget::setVisible(bool) (this=0x27cfa60, visible=<optimized out>) at kernel/qwidget.cpp:8108
#74 0x00007fde4fd2a0e9 in QStackedLayout::setCurrentIndex(int) (this=0x18ccf10, index=2) at kernel/qstackedlayout.cpp:319
#75 0x00007fde4fd2a2d4 in QStackedLayout::setCurrentWidget(QWidget*) (this=0x18ccf10, widget=widget@entry=0x27cfa60) at kernel/qstackedlayout.cpp:374
#76 0x00007fde4fea3f81 in QStackedWidget::setCurrentWidget(QWidget*) (this=<optimized out>, widget=widget@entry=0x27cfa60) at widgets/qstackedwidget.cpp:244
#77 0x00007fde50318ac5 in KPageViewPrivate::_k_pageSelected(QItemSelection const&, QItemSelection const&) (this=0x18e3180, index=..., previous=...) at ../../src/kpageview.cpp:246
#78 0x00007fde4e860fca in QMetaObject::activate(QObject*, int, int, void**) (sender=sender@entry=0x22bab10, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe702802f0) at kernel/qobject.cpp:3713
#79 0x00007fde4e8617d7 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=sender@entry=0x22bab10, m=m@entry=0x7fde4ea78160 <QItemSelectionModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe702802f0) at kernel/qobject.cpp:3578
#80 0x00007fde4e7e2fc7 in QItemSelectionModel::selectionChanged(QItemSelection const&, QItemSelection const&) (this=this@entry=0x22bab10, _t1=..., _t2=...) at .moc/moc_qitemselectionmodel.cpp:473
#81 0x00007fde4e7e73bc in QItemSelectionModel::emitSelectionChanged(QItemSelection const&, QItemSelection const&) (this=this@entry=0x22bab10, newSelection=..., oldSelection=...) at itemmodels/qitemselectionmodel.cpp:1857
#82 0x00007fde4e7e98a4 in QItemSelectionModel::select(QItemSelection const&, QFlags<QItemSelectionModel::SelectionFlag>) (this=0x22bab10, selection=..., command=...) at itemmodels/qitemselectionmodel.cpp:1288
#83 0x00007fde4ff83a4f in QListView::setSelection(QRect const&, QFlags<QItemSelectionModel::SelectionFlag>) (this=<optimized out>, rect=..., command=...) at itemviews/qlistview.cpp:1352
#84 0x00007fde4ff6501d in QAbstractItemView::mousePressEvent(QMouseEvent*) (this=0x18e1c50, event=<optimized out>) at itemviews/qabstractitemview.cpp:1733
#85 0x00007fde4fd483cf in QWidget::event(QEvent*) (this=this@entry=0x18e1c50, event=event@entry=0x7ffe70280c60) at kernel/qwidget.cpp:8674
#86 0x00007fde4fe46b5e in QFrame::event(QEvent*) (this=0x18e1c50, e=0x7ffe70280c60) at widgets/qframe.cpp:540
#87 0x00007fde4ff6c5db in QAbstractItemView::viewportEvent(QEvent*) (this=0x18e1c50, event=0x7ffe70280c60) at itemviews/qabstractitemview.cpp:1685
#88 0x00007fde4e832412 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) (this=this@entry=0x153b280, receiver=receiver@entry=0x273d380, event=event@entry=0x7ffe70280c60) at kernel/qcoreapplication.cpp:1072
#89 0x00007fde4fd0503c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x153b280, receiver=receiver@entry=0x273d380, e=e@entry=0x7ffe70280c60) at kernel/qapplication.cpp:3712
#90 0x00007fde4fd0ac19 in QApplication::notify(QObject*, QEvent*) (this=<optimized out>, receiver=0x273d380, e=0x7ffe70280c60) at kernel/qapplication.cpp:3276
#91 0x00007fde4e83262b in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffe70281510, receiver=receiver@entry=0x273d380, event=event@entry=0x7ffe70280c60) at kernel/qcoreapplication.cpp:965
#92 0x00007fde4fd09b32 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) (event=0x7ffe70280c60, receiver=0x273d380) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#93 0x00007fde4fd09b32 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) (receiver=receiver@entry=0x273d380, event=event@entry=0x7ffe70280c60, alienWidget=alienWidget@entry=0x273d380, nativeWidget=0x18e1c50, buttonDown=buttonDown@entry=0x7fde50235b20 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2770
#94 0x00007fde4fd6257b in QWidgetWindow::handleMouseEvent(QMouseEvent*) (this=this@entry=0x29273b0, event=event@entry=0x7ffe70281070) at kernel/qwidgetwindow.cpp:555
#95 0x00007fde4fd64b3b in QWidgetWindow::event(QEvent*) (this=0x29273b0, event=0x7ffe70281070) at kernel/qwidgetwindow.cpp:210
#96 0x00007fde4fd0505c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x153b280, receiver=receiver@entry=0x29273b0, e=e@entry=0x7ffe70281070) at kernel/qapplication.cpp:3716
#97 0x00007fde4fd0a516 in QApplication::notify(QObject*, QEvent*) (this=0x7ffe70281510, receiver=0x29273b0, e=0x7ffe70281070) at kernel/qapplication.cpp:3499
#98 0x00007fde4e83262b in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffe70281510, receiver=receiver@entry=0x29273b0, event=event@entry=0x7ffe70281070) at kernel/qcoreapplication.cpp:965
#99 0x00007fde4f754521 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) (event=0x7ffe70281070, receiver=0x29273b0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#100 0x00007fde4f754521 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) (e=0x222af80) at kernel/qguiapplication.cpp:1804
#101 0x00007fde4f7561e5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) (e=e@entry=0x222af80) at kernel/qguiapplication.cpp:1596
#102 0x00007fde4f739f38 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) (flags=...) at kernel/qwindowsysteminterface.cpp:625
#103 0x00007fde420a1f10 in userEventSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#104 0x00007fde4aeac127 in g_main_context_dispatch (context=0x7fde38001710) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3154
#105 0x00007fde4aeac127 in g_main_context_dispatch (context=context@entry=0x7fde38001710) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3769
#106 0x00007fde4aeac380 in g_main_context_iterate (context=context@entry=0x7fde38001710, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3840
#107 0x00007fde4aeac42c in g_main_context_iteration (context=0x7fde38001710, may_block=may_block@entry=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#108 0x00007fde4e888a7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x15bd850, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#109 0x00007fde4e82fdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffe702813f0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#110 0x00007fde4e837e8c in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1229
#111 0x00007fde4f74bc3c in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1542
#112 0x00007fde4fd01495 in QApplication::exec() () at kernel/qapplication.cpp:2976
#113 0x000000000040f7a1 in main(int, char**) (argc=1, argv=<optimized out>) at /build/systemsettings-3AmRXd/systemsettings-5.5.5/app/main.cpp:55

Reported using DrKonqi
Comment 1 Christoph Feck 2016-06-12 12:38:34 UTC 
Possibly bug 351839.
Comment 2 Martin Flöser 2016-08-27 15:37:45 UTC 
Unfortunately the backtrace is lacking debug information which means we don't see where it crashed. From the information we have it looks like a bug in QtQuick. If you are able to reproduce please install debug symbols and attach a new backtrace - hopefully it helps us to see better what's going on and reporting that bug to Qt.
Comment 3 Con Kolivas 2016-08-28 11:35:11 UTC 
I was pretty sure I installed all debuginfo that was possible. What am I missing?
Comment 4 Martin Flöser 2016-08-29 09:24:56 UTC 
> #7 0x00007fde4ce8b685 in QV4::ExecutionEngine::newStringObject(QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5

This is still missing debug symbols for the libQt5Qml.so.5. Also for QtQuick and
> #50 0x00007fde30677e24 in () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kwincompositing.so
Comment 5 Con Kolivas 2016-08-29 11:41:50 UTC 
Thanks. I've tried every way I can think of to find the remaining debug symbols but I don't know where ubunut has hidden them. list-dbgsym-packages only shows one package that I already have installed.
list-dbgsym-packages-v2.1.sh -a /usr/bin/systemsettings5
systemsettings-dbg - System Settings interface debug files
I had installed everything I could find related to qtquick as well. Given I can't find any more debug symbols and this bug only happened once to me I may as well give up on it and close it. It's probably just another nvidia driver related issue.