Application: systemsettings5 (5.12.4)
 (Compiled from sources)
Qt Version: 5.9.1
Frameworks Version: 5.44.0
Operating System: Linux 4.13.0-39-generic x86_64
Distribution: Ubuntu 17.10

-- Information about the crash:
entering a seach term in the global search box for system settings.

-- 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 0x7f4a94e1a140 (LWP 11432))]

Thread 7 (Thread 0x7f4a53fff700 (LWP 11444)):
#0  0x00007f4a9088806d in __GI___libc_read (fd=21, buf=0x7f4a53ffebd0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f4a8a7ff280 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a8a7bac4b in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a8a7bb110 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4a8a7bb502 in g_main_loop_run () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4a59a46b26 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007f4a8a7e2645 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f4a8caa47fc in start_thread (arg=0x7f4a53fff700) at pthread_create.c:465
#8  0x00007f4a90898b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f4a58cc4700 (LWP 11443)):
#0  0x00007f4a9088c951 in __GI___poll (fds=0x55c8f1ff4240, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4a8a7bb169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a8a7bb27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a8a7bb2c1 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4a8a7e2645 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4a8caa47fc in start_thread (arg=0x7f4a58cc4700) at pthread_create.c:465
#6  0x00007f4a90898b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f4a61569700 (LWP 11442)):
#0  0x00007f4a911cc3da in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f4a8a7ba6a8 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a8a7bb09b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a8a7bb27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4a911cc49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a91171e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4a90f913ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4a8eb02f45 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4a90f9629d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f4a8caa47fc in start_thread (arg=0x7f4a61569700) at pthread_create.c:465
#10 0x00007f4a90898b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f4a6aec4700 (LWP 11441)):
#0  0x00007f4a8a7ba879 in g_main_context_query () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4a8a7bb0e7 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a8a7bb27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a911cc49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4a91171e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a90f913ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4a8eb02f45 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4a90f9629d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4a8caa47fc in start_thread (arg=0x7f4a6aec4700) at pthread_create.c:465
#9  0x00007f4a90898b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f4a77efe700 (LWP 11439)):
#0  0x00007f4a8a7ba678 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4a8a7bb09b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a8a7bb27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a911cc49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4a91171e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a90f913ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4a92ad0e45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f4a90f9629d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4a8caa47fc in start_thread (arg=0x7f4a77efe700) at pthread_create.c:465
#9  0x00007f4a90898b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f4a80f4b700 (LWP 11438)):
#0  0x00007f4a9088c951 in __GI___poll (fds=0x7f4a80f4abb8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4a8c635747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f4a8c63753a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f4a834a5f09 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f4a90f9629d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a8caa47fc in start_thread (arg=0x7f4a80f4b700) at pthread_create.c:465
#6  0x00007f4a90898b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f4a94e1a140 (LWP 11432)):
[KCrash Handler]
#6  0x00007f4a9117c9f0 in QMetaObject::inherits(QMetaObject const*) const () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4a9117ca44 in QMetaObject::cast(QObject const*) const () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4a921d08fd in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f4a921892f6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f4a91173de8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f4a8eff6265 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f4a8f001f3a in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007f4a8f0022c5 in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f4a9218046c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f4a92187d34 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f4a91173de8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f4a8f0135a8 in QQuickWindow::sendEvent(QQuickItem*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x00007f4a8f0138bf in QQuickWindow::keyReleaseEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007f4a919d0d35 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007f4a8f01ad05 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007f4a9218046c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f4a92187d34 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f4a91173de8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f4a8f67abec in QQuickWidget::keyReleaseEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#25 0x00007f4a921c0dc8 in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007f4a9218046c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007f4a92189272 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f4a91173de8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f4a921ddfa5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f4a9218046c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007f4a92187d34 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#32 0x00007f4a91173de8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f4a919c1ab0 in QGuiApplicationPrivate::processKeyEvent(QWindowSystemInterfacePrivate::KeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#34 0x00007f4a919c6a05 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#35 0x00007f4a9199ecab in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#36 0x00007f4a835085a0 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#37 0x00007f4a8a7bafb7 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007f4a8a7bb1f0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007f4a8a7bb27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007f4a911cc47f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007f4a91171e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00007f4a9117ada4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x000055c8eb55ce44 in  ()
#44 0x00007f4a907a51c1 in __libc_start_main (main=0x55c8eb55ca40, argc=1, argv=0x7ffe463e14c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe463e14b8) at ../csu/libc-start.c:308
#45 0x000055c8eb55ceca in _start ()

Reported using DrKonqi