Running xfce4 under vnc xfce4-session report "Another session manager is already running"

Submitted by Ross Williamson

Assigned to Xfce Bug Triage

Link to original bug (#7502)

Description

xfce4-session reports "Another session manager is already running"

Will not start in a vnc session. I can not find any instances of xf* in ps aux

Version: 4.6.2