SUMMARY kded5 crash with a segmentation fault just after login. As a result the desktop is mostly unusable. The crash handler is unable to report the issue arguing that "kded5 does not provide a bug reporting address". But after some digging I got this backtrace : https://retrace.fedoraproject.org/faf/reports/625180/ STEPS TO REPRODUCE 1. Login into the session OBSERVED RESULT The Crash handler reports that kded5 closed unexpectedly. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Fedora Linux 36 (KDE Plasma) x86_64 KDE Plasma Version: Plasma 5.27.1 KDE Frameworks Version: 5.103.0 Qt Version: 5.15.7 ADDITIONAL INFORMATION Problem happens on both X11 and Wayland.
Relevant part: KDecoration2::Decoration::setSettings(QSharedPointer<KDecoration2::DecorationSettings> const&) ConfigValueProvider::windowDecorationsButtonsImages() const GtkConfig::setWindowDecorationsAppearance() const GtkConfig::applyAllSettings() const GtkConfig::GtkConfig(QObject*, QList<QVariant> const&) Issue appears to be in kde-gtk-config or kdecoration Starting in kdecoration since that's what provided the kded module.
I suffered from the same bug. In addition, systemsettings crashed (and still does crash) when I went into the Window Decorations module. After several retries, I managed to change the window decorations from Plastik to Translucent; then I logged out and logged back in again. This has stopped kded5 from crashing. In systemsettings, you may be able to change window decorations without going into the Window Decorations module: go into "Appearance — Global Theme", click on a theme, and then click "Choose what to apply...".
Problem no longer occurs with recent updates. Maybe it was fixed upstream.