Was checking various system settings and closed the window pane for it and error popped up. Couldn't find this error in here with search...

The same issue happened in OpenSuse Leap 42.1 but was fixed. https://bugzilla.opensuse.org/show_bug.cgi?id=951933

If you go to K icon in bottom left to open menu, click "configure Desktop" icon in left panel, it opens up fine. I then clicked "Power management" under hardware settings section (didn't do anything specific). In top left clicked on "< Overview" (back) link. Then clicked on "Display and Monitor" setting /icon, to view "Display Configuration" settings there (didn't do anything specific), and then again clicked "< Overview" (back) link, and then get that error over and over again. Doesn't seem to happen with other things though...

Relates to KDE version of Kubuntu Wily, not Gnome version... I believe this output is same from Kubuntu Wily as it is in OpenSuse Leap...

Application: systemsettings5 (5.4.1)

Qt Version: 5.5.0
Operating System: Linux 4.1.10-1-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f3c92cf1780 (LWP 2338))]

Thread 2 (Thread 0x7f3c7ed25700 (LWP 2339)):
#0 0x00007f3c8ea6ac1d in poll () from /lib64/libc.so.6
#1 0x00007f3c8b84f422 in ?? () from /usr/lib64/libxcb.so.1
#2 0x00007f3c8b85100f in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3 0x00007f3c816abc29 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4 0x00007f3c8f16155f in ?? () from /usr/lib64/libQt5Core.so.5
#5 0x00007f3c8afda0a4 in start_thread () from /lib64/libpthread.so.0
#6 0x00007f3c8ea7304d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f3c92cf1780 (LWP 2338)):
[KCrash Handler]
#6 0x00007f3c8dbcc72b in QQuickItemPrivate::addToDirtyList() () from /usr/lib64/libQt5Quick.so.5
#7 0x00007f3c8dbcc7e8 in QQuickItemPrivate::dirty(QQuickItemPrivate::DirtyType) () from /usr/lib64/libQt5Quick.so.5
#8 0x00007f3c8dbd85b5 in ?? () from /usr/lib64/libQt5Quick.so.5
#9 0x00007f3c8f36c796 in QObject::event(QEvent*) () from /usr/lib64/libQt5Core.so.5
#10 0x00007f3c8dbd44ab in QQuickItem::event(QEvent*) () from /usr/lib64/libQt5Quick.so.5
#11 0x00007f3c90e55e8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#12 0x00007f3c90e5acd8 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#13 0x00007f3c8f33bba5 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#14 0x00007f3c8f33dd67 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQt5Core.so.5
#15 0x00007f3c8f3935c3 in ?? () from /usr/lib64/libQt5Core.so.5
#16 0x00007f3c8aabdc84 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#17 0x00007f3c8aabded8 in ?? () from /usr/lib64/libglib-2.0.so.0
#18 0x00007f3c8aabdf7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#19 0x00007f3c8f392a3c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#20 0x00007f3c8f339a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#21 0x00007f3c8f3415d6 in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#22 0x00000000004103cf in main ()

https://build.opensuse.org/request/show/341036