What is not starting is not x-session-manager (xfce4-session) but xfsettingsd, which is run by xfce4-session. It can't run because it's an XSettings daemon, as gnome-settings-daemon, and thus there can't be two of them running at the same time.
Regards, -- Yves-Alexis
signature.asc
Description: This is a digitally signed message part
