Comment 10 for bug 1640409

Khurshid Alam (khurshid-alam) wrote :

That is because XDG_SEAT and XDG_SESSION_ID are not set anymore & indicator-session depends on it.

dbus-x11 installs /etc/X11/Xsession.d/95dbus_update-activation-env which unsets those env variables.

Comment out those & reboot. It will work again. LP: #1831491