Application: systemsettings5 (5.17.4)

Qt Version: 5.12.4
Frameworks Version: 5.64.0
Operating System: Linux 5.3.0-24-generic x86_64
Distribution: Ubuntu 19.10

-- Information about the crash:
- What I was doing when the application crashed:
searching through settings to optimize, had looked through all 3 network settings (connections, settings, and bluetooth), then startup and shutdown in workspace options when it crashed the first time. Clicked restart app from crash notification, did not submit crash report. 
Proceeded to go through startup & shutdown again, then window management, then workspace behavior, and it crashed again. Proceeded to submit crash report this time upon seeing crash data was useful.
Only setting i had actually changed this whole time was in network settings, turning off "automatically accept cookies", so unlikely to be related.
Selected not a duplicate of other Window Management crashes because first time it crashed i had not touched that yet

The crash can be reproduced sometimes.

-- 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 0x7f3849325800 (LWP 4790))]

Thread 7 (Thread 0x7f38218dc700 (LWP 4828)):
#0  0x00007f384d180c2f in __GI___poll (fds=0x7f381c0e1770, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f384b4aea3e in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f384b4aeb73 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f384d7276c3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f384d6ce63b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f384d507a75 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f384c7fa319 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f384d508cc2 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f384bd4a669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f384d18d323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f3832495700 (LWP 4805)):
#0  0x00007f384d180c2f in __GI___poll (fds=0x5561419b8d10, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f384b4aea3e in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f384b4aedc3 in g_main_loop_run () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f38337f959a in  () at /lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f384b4d8111 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f384bd4a669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007f384d18d323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f3832c96700 (LWP 4804)):
#0  0x00007f384d17c2ac in __GI___libc_read (nbytes=16, buf=0x7f3832c95ce0, fd=18) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f384d17c2ac in __GI___libc_read (fd=18, buf=0x7f3832c95ce0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f384b4f663f in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f384b4ae58e in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f384b4ae9e2 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f384b4aeb73 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f384b4aebc1 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f384b4d8111 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f384bd4a669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f384d18d323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f383ffff700 (LWP 4793)):
#0  0x00007f384bd512c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55614152f9b8) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f384bd512c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55614152f968, cond=0x55614152f990) at pthread_cond_wait.c:508
#2  0x00007f384bd512c6 in __pthread_cond_wait (cond=0x55614152f990, mutex=0x55614152f968) at pthread_cond_wait.c:638
#3  0x00007f3844ca897b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f3844ca859b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f384bd4a669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007f384d18d323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f384730a700 (LWP 4792)):
#0  0x00007f384d180c2f in __GI___poll (fds=0x7f383803b810, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f384b4aea3e in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f384b4aeb73 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f384d7276c3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f384d6ce63b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f384d507a75 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f384d9a8efa in  () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f384d508cc2 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f384bd4a669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f384d18d323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f3848474700 (LWP 4791)):
#0  0x00007f384d180c2f in __GI___poll (fds=0x7f3848473ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f384bd09917 in  () at /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f384bd0b53a in xcb_wait_for_event () at /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f3848c73288 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f384d508cc2 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f384bd4a669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007f384d18d323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f3849325800 (LWP 4790)):
[KCrash Handler]
#6  0x00007f384d6fc813 in QObject::property(char const*) const () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f3830980d74 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/libkirigamiplugin.so
#8  0x00007f384c7dffe6 in QQmlObjectCreator::createInstance(int, QObject*, bool) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f384c7de634 in QQmlObjectCreator::setPropertyBinding(QQmlPropertyData const*, QV4::CompiledData::Binding const*) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f384c7ded92 in QQmlObjectCreator::setupBindings(bool) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007f384c7df99b in QQmlObjectCreator::populateInstance(int, QObject*, QObject*, QQmlPropertyData const*) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f384c7e0591 in QQmlObjectCreator::createInstance(int, QObject*, bool) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007f384c7e1180 in QQmlObjectCreator::create(int, QObject*, QQmlInstantiationInterrupt*) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007f384c7e01f2 in QQmlObjectCreator::createInstance(int, QObject*, bool) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#15 0x00007f384c7de634 in QQmlObjectCreator::setPropertyBinding(QQmlPropertyData const*, QV4::CompiledData::Binding const*) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007f384c7ded92 in QQmlObjectCreator::setupBindings(bool) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#17 0x00007f384c7df99b in QQmlObjectCreator::populateInstance(int, QObject*, QObject*, QQmlPropertyData const*) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#18 0x00007f384c7e0591 in QQmlObjectCreator::createInstance(int, QObject*, bool) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#19 0x00007f384c7e1180 in QQmlObjectCreator::create(int, QObject*, QQmlInstantiationInterrupt*) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x00007f384c7e01f2 in QQmlObjectCreator::createInstance(int, QObject*, bool) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#21 0x00007f384c7e1180 in QQmlObjectCreator::create(int, QObject*, QQmlInstantiationInterrupt*) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#22 0x00007f384c7617ec in QQmlComponentPrivate::beginCreate(QQmlContextData*) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#23 0x00007f384c75ff73 in QQmlComponent::create(QQmlContext*) () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#24 0x00007f384ed30c6c in  () at /lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#25 0x00007f384ed2ca1b in KCModuleLoader::loadModule(KCModuleInfo const&, KCModuleLoader::ErrorReporting, QWidget*, QStringList const&) () at /lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#26 0x00007f384ed35ff5 in  () at /lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#27 0x00007f384ed36648 in KCModuleProxy::realModule() const () at /lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#28 0x00007f384ed78fa7 in ModuleView::updatePageIconHeader(KPageWidgetItem*, bool) () at /lib/x86_64-linux-gnu/libsystemsettingsview.so.3
#29 0x00007f384ed7a29d in ModuleView::addModule(KCModuleInfo*) () at /lib/x86_64-linux-gnu/libsystemsettingsview.so.3
#30 0x00007f384ed7a68d in ModuleView::loadModule(QModelIndex const&) () at /lib/x86_64-linux-gnu/libsystemsettingsview.so.3
#31 0x00007f384d6fb5c8 in QMetaObject::activate(QObject*, int, int, void**) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f384e3e5679 in QAbstractItemView::activated(QModelIndex const&) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007f384e3e9945 in QAbstractItemView::mouseReleaseEvent(QMouseEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007f384e42f4b3 in QListView::mouseReleaseEvent(QMouseEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#35 0x00007f384ceba615 in KCategorizedView::mouseReleaseEvent(QMouseEvent*) () at /lib/x86_64-linux-gnu/libKF5ItemViews.so.5
#36 0x00007f384e1c204e in QWidget::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#37 0x00007f384e26f782 in QFrame::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#38 0x00007f384e3f37d2 in QAbstractItemView::viewportEvent(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#39 0x00007f384d6cf7ab in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007f384e17fa75 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#41 0x00007f384e189053 in QApplication::notify(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#42 0x00007f384d6cfa9a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x00007f384e188157 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#44 0x00007f384e1de14d in  () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#45 0x00007f384e1e0fdc in  () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007f384e17fa86 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#47 0x00007f384e188e00 in QApplication::notify(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#48 0x00007f384d6cfa9a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x00007f384db53d73 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /lib/x86_64-linux-gnu/libQt5Gui.so.5
#50 0x00007f384db555fb in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /lib/x86_64-linux-gnu/libQt5Gui.so.5
#51 0x00007f384db2f26b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Gui.so.5
#52 0x00007f3848c7428e in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#53 0x00007f384b4ae84d in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#54 0x00007f384b4aead0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#55 0x00007f384b4aeb73 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#56 0x00007f384d7276a5 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#57 0x00007f384d6ce63b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#58 0x00007f384d6d63a6 in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#59 0x000055614045581e in  ()
#60 0x00007f384d0921e3 in __libc_start_main (main=0x556140455420, argc=1, argv=0x7ffc1e8dc368, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc1e8dc358) at ../csu/libc-start.c:308
#61 0x00005561404558ae in _start ()
[Inferior 1 (process 4790) detached]

Possible duplicates by query: bug 415186, bug 415110, bug 415109, bug 415104, bug 415016.

Reported using DrKonqi