FYI, here is the output of `journalctl -f` (run as root in tyy4) during the automatic lock screen of my session (of the user flaf) and the gnome-shell crash: ``` Aug 21 18:11:17 flhpz4 sudo[25344]: pam_unix(sudo:session): session closed for user root Aug 21 18:11:17 flhpz4 sudo[25348]: flaf : TTY=tty4 ; PWD=/home/flaf ; USER=root ; COMMAND=/sbin/mdadm --detail --test /dev/md126 Aug 21 18:11:17 flhpz4 sudo[25348]: pam_unix(sudo:session): session opened for user root(uid=0) by flaf(uid=1000) Aug 21 18:11:17 flhpz4 sudo[25348]: pam_unix(sudo:session): session closed for user root Aug 21 18:11:17 flhpz4 gnome-software[12398]: Failed to reload changed app filter: App filtering is globally disabled Aug 21 18:11:17 flhpz4 gnome-software[12398]: Failed to reload changed app filter: App filtering is globally disabled Aug 21 18:11:21 flhpz4 sudo[25400]: flaf : TTY=tty4 ; PWD=/root ; USER=root ; COMMAND=/bin/bash Aug 21 18:11:21 flhpz4 sudo[25400]: pam_unix(sudo-i:session): session opened for user root(uid=0) by flaf(uid=1000) Aug 21 18:11:37 flhpz4 geoclue[25036]: Service not used for 60 seconds. Shutting down.. Aug 21 18:11:37 flhpz4 systemd[1]: geoclue.service: Deactivated successfully. # # Begin of the automatic lock screen. # Aug 21 18:11:47 flhpz4 kernel: rfkill: input handler disabled Aug 21 18:11:47 flhpz4 kernel: gnome-shell[24900]: segfault at 56230aceaac6 ip 00007f71b0ab42e7 sp 00007fff330d9418 error 4 in libgbm.so.1.0.0[7f71b0ab3000+8000] Aug 21 18:11:47 flhpz4 kernel: Code: 18 c3 90 f3 0f 1e fa 48 8b 07 ff a0 c0 00 00 00 0f 1f 00 f3 0f 1e fa 48 8b 07 ff a0 a8 00 00 00 0f 1f 00 f3 0f 1e fa 48 8b 07 a0 b0 00 00 00 0f 1f 00 f3 0f 1e fa 48 8b 07 ff a0 b8 00 00 00 Aug 21 18:11:47 flhpz4 gsd-power[25102]: Error reading events from display: Broken pipe Aug 21 18:11:47 flhpz4 org.gnome.Shell.desktop[25002]: (EE) failed to read Wayland events: Broken pipe Aug 21 18:11:47 flhpz4 gsd-media-keys[25084]: Error reading events from display: Broken pipe Aug 21 18:11:47 flhpz4 gsd-wacom[25056]: Error reading events from display: Broken pipe Aug 21 18:11:47 flhpz4 gsd-keyboard[25058]: Error reading events from display: Broken pipe Aug 21 18:11:47 flhpz4 gnome-session[24880]: gnome-session-binary[24880]: WARNING: App 'org.gnome.SettingsDaemon.Wacom.desktop' exited with code 1 Aug 21 18:11:47 flhpz4 gnome-session-binary[24880]: WARNING: App 'org.gnome.SettingsDaemon.Wacom.desktop' exited with code 1 Aug 21 18:11:47 flhpz4 gnome-session[24880]: gnome-session-binary[24880]: WARNING: App 'org.gnome.SettingsDaemon.Keyboard.desktop' exited with code 1 Aug 21 18:11:47 flhpz4 gnome-session[24880]: gnome-session-binary[24880]: WARNING: App 'org.gnome.SettingsDaemon.MediaKeys.desktop' exited with code 1 Aug 21 18:11:47 flhpz4 gnome-session[24880]: gnome-session-binary[24880]: WARNING: App 'org.gnome.SettingsDaemon.Power.desktop' exited with code 1 Aug 21 18:11:47 flhpz4 gnome-session-binary[24880]: WARNING: App 'org.gnome.SettingsDaemon.Keyboard.desktop' exited with code 1 Aug 21 18:11:47 flhpz4 gnome-session-binary[24880]: WARNING: App 'org.gnome.SettingsDaemon.MediaKeys.desktop' exited with code 1 Aug 21 18:11:47 flhpz4 gnome-session-binary[24880]: WARNING: App 'org.gnome.SettingsDaemon.Power.desktop' exited with code 1 Aug 21 18:11:47 flhpz4 gnome-session[24880]: gnome-session-binary[24880]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 11 Aug 21 18:11:47 flhpz4 gnome-session-binary[24880]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 11 Aug 21 18:11:47 flhpz4 gnome-session-binary[24880]: Unrecoverable failure in required component org.gnome.Shell.desktop Aug 21 18:11:47 flhpz4 gsd-color[25057]: Error reading events from display: Broken pipe Aug 21 18:11:47 flhpz4 /usr/libexec/gdm-wayland-session[24879]: dbus-daemon[24879]: [session uid=122 pid=24879] Activating service name='ca.desrt.dconf' requested by ':1.2' (uid=122 pid=24880 comm="/usr/libexec/gnome-session-binary --autostart /usr" label="unconfined") Aug 21 18:11:47 flhpz4 org.gnome.SettingsDaemon.Keyboard.desktop[25429]: Cannot open display: Aug 21 18:11:47 flhpz4 /usr/libexec/gdm-wayland-session[24879]: dbus-daemon[24879]: [session uid=122 pid=24879] Successfully activated service 'ca.desrt.dconf' Aug 21 18:11:47 flhpz4 kernel: rfkill: input handler enabled Aug 21 18:11:47 flhpz4 org.gnome.SettingsDaemon.Wacom.desktop[25425]: Cannot open display: Aug 21 18:11:47 flhpz4 gsd-color[12313]: failed to connect to device: Failed to connect to missing device /org/freedesktop/ColorManager/devices/xrandr_Hewlett_Packard_HP_24er_3CM8010FLW_gdm_122 Aug 21 18:11:47 flhpz4 gsd-color[12313]: failed to connect to device: Failed to connect to missing device /org/freedesktop/ColorManager/devices/xrandr_Ancor_Communications_Inc_MX279_E8LMRS026763_gdm_122 Aug 21 18:11:47 flhpz4 org.gnome.SettingsDaemon.MediaKeys.desktop[25428]: Cannot open display: Aug 21 18:11:47 flhpz4 org.gnome.SettingsDaemon.Power.desktop[25430]: Cannot open display: Aug 21 18:11:47 flhpz4 gdm-launch-environment][24855]: pam_unix(gdm-launch-environment:session): session closed for user gdm Aug 21 18:11:47 flhpz4 gdm-launch-environment][24855]: GLib-GObject: g_object_unref: assertion 'G_IS_OBJECT (object)' failed Aug 21 18:11:47 flhpz4 systemd-logind[1332]: Session c14 logged out. Waiting for processes to exit. Aug 21 18:11:47 flhpz4 gdm3[1578]: Gdm: Child process -24872 was already dead. Aug 21 18:11:47 flhpz4 gdm-launch-environment][25439]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=122) by (uid=0) Aug 21 18:11:47 flhpz4 systemd-logind[1332]: New session c15 of user gdm. Aug 21 18:11:47 flhpz4 systemd[1]: Started Session c15 of User gdm. Aug 21 18:11:47 flhpz4 gnome-session[25449]: gnome-session-binary[25449]: GLib-GIO-CRITICAL: g_bus_get_sync: assertion 'error == NULL || *error == NULL' failed Aug 21 18:11:47 flhpz4 gnome-session[25449]: gnome-session-binary[25449]: GLib-GIO-CRITICAL: g_bus_get_sync: assertion 'error == NULL || *error == NULL' failed Aug 21 18:11:47 flhpz4 gnome-session-binary[25449]: GLib-GIO-CRITICAL: g_bus_get_sync: assertion 'error == NULL || *error == NULL' failed Aug 21 18:11:47 flhpz4 gnome-session-binary[25449]: GLib-GIO-CRITICAL: g_bus_get_sync: assertion 'error == NULL || *error == NULL' failed Aug 21 18:11:47 flhpz4 gnome-shell[25455]: Running GNOME Shell (using mutter 42.2) as a Wayland display server Aug 21 18:11:47 flhpz4 gnome-shell[25455]: Device '/dev/dri/card0' prefers shadow buffer Aug 21 18:11:47 flhpz4 gnome-shell[25455]: Added device '/dev/dri/card0' (amdgpu) using atomic mode setting. Aug 21 18:11:47 flhpz4 gnome-shell[25455]: Device '/dev/dri/card1' prefers shadow buffer Aug 21 18:11:47 flhpz4 gnome-shell[25455]: Added device '/dev/dri/card1' (amdgpu) using atomic mode setting. Aug 21 18:11:47 flhpz4 gnome-shell[25455]: Created gbm renderer for '/dev/dri/card0' Aug 21 18:11:47 flhpz4 gnome-shell[25455]: Created gbm renderer for '/dev/dri/card1' Aug 21 18:11:47 flhpz4 gnome-shell[25455]: Boot VGA GPU /dev/dri/card0 selected as primary Aug 21 18:11:47 flhpz4 polkitd(authority=local)[1316]: Unregistered Authentication Agent for unix-session:c14 (system bus name :1.556, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disconnected from bus) Aug 21 18:11:48 flhpz4 /usr/libexec/gdm-wayland-session[25448]: dbus-daemon[25448]: [session uid=122 pid=25448] Activating service name='org.a11y.Bus' requested by ':1.4' (uid=122 pid=25455 comm="/usr/bin/gnome-shell " label="unconfined") Aug 21 18:11:48 flhpz4 /usr/libexec/gdm-wayland-session[25448]: dbus-daemon[25448]: [session uid=122 pid=25448] Successfully activated service 'org.a11y.Bus' Aug 21 18:11:48 flhpz4 gnome-shell[25455]: Using public X11 display :1024, (using :1025 for managed services) Aug 21 18:11:48 flhpz4 gnome-shell[25455]: Using Wayland display name 'wayland-0' Aug 21 18:11:48 flhpz4 org.gnome.Shell.desktop[25510]: (WW) Option "-listen" for file descriptors is deprecated Aug 21 18:11:48 flhpz4 org.gnome.Shell.desktop[25510]: Please use "-listenfd" instead. Aug 21 18:11:48 flhpz4 org.gnome.Shell.desktop[25510]: (WW) Option "-listen" for file descriptors is deprecated Aug 21 18:11:48 flhpz4 org.gnome.Shell.desktop[25510]: Please use "-listenfd" instead. Aug 21 18:11:48 flhpz4 gnome-shell[25455]: Unset XDG_SESSION_ID, getCurrentSessionProxy() called outside a user session. Asking logind directly. Aug 21 18:11:48 flhpz4 gnome-shell[25455]: Will monitor session c15 Aug 21 18:11:48 flhpz4 dbus-daemon[1301]: [system] Activating via systemd: service name='org.freedesktop.locale1' unit='dbus-org.freedesktop.locale1.service' requested by ':1.585' (uid=122 pid=25455 comm="/usr/bin/gnome-shell " label="unconfined") Aug 21 18:11:48 flhpz4 systemd[1]: Starting Locale Service... Aug 21 18:11:49 flhpz4 /usr/libexec/gdm-wayland-session[25448]: dbus-daemon[25448]: [session uid=122 pid=25448] Activating service name='org.freedesktop.impl.portal.PermissionStore' requested by ':1.3' (uid=122 pid=25455 comm="/usr/bin/gnome-shell " label="unconfined") Aug 21 18:11:49 flhpz4 /usr/libexec/gdm-wayland-session[25448]: dbus-daemon[25448]: [session uid=122 pid=25448] Successfully activated service 'org.freedesktop.impl.portal.PermissionStore' Aug 21 18:11:49 flhpz4 systemd[24860]: Starting Sound Service... Aug 21 18:11:49 flhpz4 dbus-daemon[1301]: [system] Successfully activated service 'org.freedesktop.locale1' Aug 21 18:11:49 flhpz4 systemd[1]: Started Locale Service. Aug 21 18:11:49 flhpz4 dbus-daemon[1301]: [system] Activating via systemd: service name='org.freedesktop.GeoClue2' unit='geoclue.service' requested by ':1.585' (uid=122 pid=25455 comm="/usr/bin/gnome-shell " label="unconfined") Aug 21 18:11:49 flhpz4 systemd[1]: Starting Location Lookup Service... Aug 21 18:11:49 flhpz4 rtkit-daemon[1824]: Successfully made thread 25542 of process 25542 owned by '122' high priority at nice level -11. Aug 21 18:11:49 flhpz4 rtkit-daemon[1824]: Supervising 9 threads of 4 processes of 2 users. Aug 21 18:11:49 flhpz4 polkitd(authority=local)[1316]: Registered Authentication Agent for unix-session:c15 (system bus name :1.585 [/usr/bin/gnome-shell], object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) Aug 21 18:11:49 flhpz4 gnome-shell[25455]: Extension