When opening Launch feedback section of the systemsettings, the window title will start to flicker. When entered, changing settings category crashes the app. Pressing the < button from top left corner will freeze everything from the window except the category menu. Running systemsettings5 from terminal gives: QCoreApplication::arguments: Please instantiate the QApplication object first WARNING: viewBackgroundColor is deprecated, use backgroundColor with colorSet: Theme.View instead WARNING: viewBackgroundColor is deprecated, use backgroundColor with colorSet: Theme.View instead KActivities: Database connection: "kactivities_db_resources_139958011861056_readonly" query_only: QVariant(qlonglong, 1) journal_mode: QVariant(QString, "wal") wal_autocheckpoint: QVariant(qlonglong, 100) synchronous: QVariant(qlonglong, 0) Nothing to load - the client id is empty Nothing to load - the client id is empty org.kde.kcoreaddons: Error loading plugin "kcm_launchfeedback" "The shared library was not found." Plugin search paths are ("/usr/lib/qt/plugins", "/usr/bin") The environment variable QT_PLUGIN_PATH might be not correctly set KActivitiesStats( 0x560e050bfbf0 ) ResultModelPrivate::onResultScoreUpdated result added: "kcm:componentchooser.desktop" score: 34.3539 last: 1535369700 first: 1535301869 KActivitiesStats( 0x560e050bfbf0 ) ResultModelPrivate::onResultScoreUpdated result added: "kcm:kcm_launchfeedback.desktop" score: 30.3866 last: 1535369701 first: 1535220838 Segmentation fault (core dumped).
Can you please run it through gdb and get a backtrace of the crash, thanks.
Starting program: /usr/bin/systemsettings5 systemsettings5 [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". QCoreApplication::arguments: Please instantiate the QApplication object first [New Thread 0x7fffec9a7700 (LWP 1822)] [New Thread 0x7fffe5247700 (LWP 1823)] [New Thread 0x7fffdde99700 (LWP 1824)] [New Thread 0x7fffd5ef8700 (LWP 1826)] WARNING: viewBackgroundColor is deprecated, use backgroundColor with colorSet: Theme.View instead WARNING: viewBackgroundColor is deprecated, use backgroundColor with colorSet: Theme.View instead [New Thread 0x7fffcf973700 (LWP 1828)] KActivities: Database connection: "kactivities_db_resources_140737205303360_readonly" query_only: QVariant(qlonglong, 1) journal_mode: QVariant(QString, "wal") wal_autocheckpoint: QVariant(qlonglong, 100) synchronous: QVariant(qlonglong, 0) Nothing to load - the client id is empty Nothing to load - the client id is empty org.kde.kcoreaddons: Error loading plugin "kcm_launchfeedback" "The shared library was not found." Plugin search paths are ("/usr/lib/qt/plugins", "/usr/bin") The environment variable QT_PLUGIN_PATH might be not correctly set [New Thread 0x7fffcc99d700 (LWP 1830)] KActivitiesStats( 0x555555fc3700 ) ResultModelPrivate::onResultScoreUpdated result added: "kcm:componentchooser.desktop" score: 40.3539 last: 1535383123 first: 1535301869 Thread 1 "systemsettings5" received signal SIGSEGV, Segmentation fault. 0x00007ffff7bfebc0 in KQuickAddons::ConfigModule::needsSave() () from /usr/lib/libKF5QuickAddons.so.5 If this isnt what you wanted then please tell me how since I am very new linux user.
Thanks for providing the the information! Ideally you would want to provide the entire backtrace, not just the first line, but in this instance that was sufficient, I have seen a similar bug report in the same component. Marking as duplicate. *** This bug has been marked as a duplicate of bug 397894 ***