Bug 469333

Application: systemsettings (5.27.3)

Qt Version: 5.15.9
Frameworks Version: 5.105.0
Operating System: Linux 6.2.14-300.fc38.x86_64 x86_64
Windowing System: Wayland
Distribution: "Fedora release 38 (Thirty Eight)"
DrKonqi: 5.27.4 [KCrashBackend]

-- Information about the crash:
My displays were arranged wrong after logging in this evening, and the "Display Configuration" window had an imaginary display "unkonw-1".  I disabled this, and arranged the other monitors, then hit apply and saved the settings as this now looked correct. I then changed legacy scaling to be done by the system, and went to the compositor and changed to "Prefer lower latency". I hit Apply, and somewhat ironicly System Settings froze (turned grey) and crashed, prompting dr konqi to appear. The application switcher in my plasma bar also appeared to be frozen for a bit, but I don't know if that is related.

The crash does not seem to be reproducible.

-- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f27ad14033a in KCMKScreen::doSave() () at /usr/lib64/qt5/plugins/plasma/kcms/systemsettings/kcm_kscreen.so
#5  0x00007f27daf358ce in KCModuleQml::save() () at /lib64/libKF5KCMUtils.so.5
#6  0x00007f27daf3dc17 in KCModuleProxy::save() () at /lib64/libKF5KCMUtils.so.5
#7  0x00007f27db71f43d in ModuleView::moduleSave(KCModuleProxy*) () at /lib64/libsystemsettingsview.so.3
#8  0x00007f27db723ef1 in ModuleView::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libsystemsettingsview.so.3
#9  0x00007f27d9ce87d8 in void doActivate<false>(QObject*, int, void**) () at /lib64/libQt5Core.so.5
#10 0x00007f27daaa9b84 in QAbstractButton::clicked(bool) () at /lib64/libQt5Widgets.so.5
#11 0x00007f27daaa9e0f in QAbstractButtonPrivate::emitClicked() () at /lib64/libQt5Widgets.so.5
#12 0x00007f27daaab770 in QAbstractButtonPrivate::click() () at /lib64/libQt5Widgets.so.5
#13 0x00007f27daaab978 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /lib64/libQt5Widgets.so.5
#14 0x00007f27da9f3688 in QWidget::event(QEvent*) () at /lib64/libQt5Widgets.so.5
#15 0x00007f27da9aeb75 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#16 0x00007f27da9b7456 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#17 0x00007f27d9cb3d48 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#18 0x00007f27da9b56a4 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () at /lib64/libQt5Widgets.so.5
#19 0x00007f27daa0d1a9 in QWidgetWindow::handleMouseEvent(QMouseEvent*) () at /lib64/libQt5Widgets.so.5
#20 0x00007f27daa1072f in QWidgetWindow::event(QEvent*) () at /lib64/libQt5Widgets.so.5
#21 0x00007f27da9aeb75 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#22 0x00007f27d9cb3d48 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#23 0x00007f27da16c44b in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /lib64/libQt5Gui.so.5
#24 0x00007f27da14aa0c in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Gui.so.5
#25 0x00007f27d77639e4 in userEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5WaylandClient.so.5
#26 0x00007f27d871339c in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#27 0x00007f27d8771438 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#28 0x00007f27d8710a23 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#29 0x00007f27d9d06919 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#30 0x00007f27d9cb270b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#31 0x00007f27d9cba99b in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#32 0x00005630d9bc35a8 in main ()
[Inferior 1 (process 5845) detached]

The reporter indicates this bug may be a duplicate of or related to bug 463649, bug 466960.

Reported using DrKonqi