Tumbleweed X64, with latest updates via zypper dup as of 2024-06-30.
On one of my systems dbus is spamming /var/log/messages :
type o2024-06-30T23:16:45.613213+01:00 traken dbus-daemon[3112]: [session uid=501 pid=3112] Activating service name='org.freedesktop.Notifications' requested by ':1.21' (uid=501 pid=3296 comm="xfce4-power-manager --restart --sm-client-id 27852")
2024-06-30T23:16:45.618727+01:00 traken dbus-daemon[3112]: [session uid=501 pid=3112] Successfully activated service 'org.freedesktop.Notifications'
2024-06-30T23:16:45.618999+01:00 traken org.freedesktop.Notifications[411057]: failed to create display
2024-06-30T23:16:45.619576+01:00 traken dbus-daemon[3112]: [session uid=501 pid=3112] Activating service name='org.freedesktop.Notifications' requested by ':1.21' (uid=501 pid=3296 comm="xfce4-power-manager --restart --sm-client-id 27852")
2024-06-30T23:16:45.624715+01:00 traken dbus-daemon[3112]: [session uid=501 pid=3112] Successfully activated service 'org.freedesktop.Notifications'
2024-06-30T23:16:45.624982+01:00 traken org.freedesktop.Notifications[411061]: failed to create display
r paste code here
I’m guessing this has something to do with xfce4-power-manager. I’ve tried re-installing it with yast. running xfce-4power-manager from a console reports “Xfce Power Manager: Another power manager is already running”
It is clear enough - a program that implements org.freedesktop.Notifications fails to start. Check /usr/share/dbus-1/services/org.freedesktop.Notifications.service what program it tries to invoke.