When i log into a graphical session, the variable $DBUS_SESSION_BUS_ADDRESS is not set.
I do have a bunch of files in ~/.dbus/session-bus, and one of them does match a dbus socket in /tmp, so I could jank it up with a WM script, the thing is, this really looks like something the display manager (sddm) should be doing, and it was working until a while ago, so, I'd rather get to the bottom of this.