(In reply to Matthias Gerstner from comment #1) > Assigning to keepassxc maintainer(s). > > Some additional logs would be helpful I guess like `journalctl`, `dmesg`, > possibly core dumps. There is no core dump, at least not in my home directory. I have just attached the Xorg.0.log file for the crashed session; here is some additional information from /var/log/messages (journalctl doesn't show anything obvious): 2022-05-31T19:21:20.209094+02:00 saturn keepassxc[3737]: qt5ct: using qt5ct plugin 2022-05-31T19:21:20.254230+02:00 saturn keepassxc[3737]: YubiKey: Failed to establish PCSC context. 2022-05-31T19:21:20.254280+02:00 saturn keepassxc[3737]: YubiKey: PCSC interface is disabled or not initialized. 2022-05-31T19:21:20.279117+02:00 saturn keepassxc[3737]: qt5ct: D-Bus global menu: no 2022-05-31T19:21:20.298812+02:00 saturn keepassxc[3737]: qt5ct: D-Bus system tray: yes 2022-05-31T19:21:20.523379+02:00 saturn keepassxc[3737]: qt5ct: palette support is disabled 2022-05-31T19:21:20.524908+02:00 saturn keepassxc[3737]: qt5ct: custom style sheet is disabled 2022-05-31T19:22:04.182861+02:00 saturn manfred: Right before invoking the auto-fill function of keepassxc 2022-05-31T19:22:15.271529+02:00 saturn at-spi-bus-launcher[2716]: XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0" 2022-05-31T19:22:15.271598+02:00 saturn at-spi-bus-launcher[2716]: after 105 requests (105 known processed) with 0 events remaining. 2022-05-31T19:22:15.272128+02:00 saturn keepassxc[3737]: The X11 connection broke: I/O error (code 1) 2022-05-31T19:22:15.273335+02:00 saturn polkitd[1728]: Unregistered Authentication Agent for unix-session:4 (system bus name :1.49, object path /org/gnome/PolicyKit1/AuthenticationAgent, locale de_DE.UTF-8) (disconnected from bus) 2022-05-31T19:22:15.275036+02:00 saturn lightdm: pam_unix(lightdm:session): session closed for user manfred