Steps to reproduce: 1. Install a new theme - for example ArchYellow, 2. Select Breeze theme and apply it, 3. Select ArchYellow (without applying it) and click on "Get New Global Themes" button, 4. Uninstall ArchYellow, Expected result: The previously applied theme (which is Breeze theme) should be selected and "Apply" button should be disabled. Real result: No theme is selected in the grid and "Apply" button is still enabled. 5. If you click on "Apply" button System settings crashes. Config: Operating System: Manjaro Linux KDE Plasma Version: 5.22.5 KDE Frameworks Version: 5.85.0 Qt Version: 5.15.2 Kernel Version: 5.4.144-1-MANJARO (64-bit) Graphics Platform: X11
The same crash can happen with Colors category.
For crashes we need backtrace
(In reply to David Redondo from comment #2) > For crashes we need backtrace I'm on Manjaro so debugging symbol are not available, is it reproducible for you ?
(In reply to David Redondo from comment #2) > For crashes we need backtrace Here's the backtrace retrieved using coredumpctl: [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". --Type <RET> for more, q to quit, c to continue without paging-- Core was generated by `/usr/bin/systemsettings5'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f50f3072f65 in ?? () from /usr/lib/qt/plugins/kcms/kcm_lookandfeel.so [Current thread is 1 (Thread 0x7f5110199a80 (LWP 11907))] (gdb) (gdb) bt #0 0x00007f50f3072f65 in () at /usr/lib/qt/plugins/kcms/kcm_lookandfeel.so #1 0x00007f5116f009b2 in () at /usr/lib/libKF5KCMUtils.so.5 #2 0x00007f5116f09eb8 in KCModuleProxy::save() () at /usr/lib/libKF5KCMUtils.so.5 #3 0x00007f5116f44f92 in ModuleView::moduleSave(KCModuleProxy*) () at /usr/lib/libsystemsettingsview.so.3 #4 0x00007f5116f3f657 in () at /usr/lib/libsystemsettingsview.so.3 #5 0x00007f511589591b in () at /usr/lib/libQt5Core.so.5 #6 0x00007f5116557817 in QAbstractButton::clicked(bool) () at /usr/lib/libQt5Widgets.so.5 #7 0x00007f5116557ac0 in () at /usr/lib/libQt5Widgets.so.5 #8 0x00007f5116559758 in () at /usr/lib/libQt5Widgets.so.5 #9 0x00007f5116559989 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/libQt5Widgets.so.5 #10 0x00007f51164a1fce in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5 #11 0x00007f511645dff6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5 #12 0x00007f5116465e59 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5 #13 0x00007f511585e1ba in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5 #14 0x00007f51164648ff in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () at /usr/lib/libQt5Widgets.so.5 #15 0x00007f51164bbe98 in () at /usr/lib/libQt5Widgets.so.5 #16 0x00007f51164bf215 in () at /usr/lib/libQt5Widgets.so.5 #17 0x00007f511645dff6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5 #18 0x00007f511585e1ba in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5 #19 0x00007f5115d59c50 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib/libQt5Gui.so.5 #20 0x00007f5115d2eb15 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5 #21 0x00007f510fd8e800 in () at /usr/lib/libQt5XcbQpa.so.5 #22 0x00007f51133f94dc in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0 #23 0x00007f511344d749 in () at /usr/lib/libglib-2.0.so.0 #24 0x00007f51133f6bc1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0 #25 0x00007f51158b7ada in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5 #26 0x00007f511585ca6b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5 #27 0x00007f5115865258 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5 #28 0x000055b54239d954 in () #29 0x00007f51151e0b25 in __libc_start_main () at /usr/lib/libc.so.6 #30 0x000055b54239e6be in () (gdb)
Already fixed in Plasma 5.23. :)