xfce4 user switching with kdm as the display manager

[Iain M Conochie <iain@thargoid.co.uk>]

Hi all,

  I have recently switched my desktop (environment?) from KDE to xfce 
on a jessie install. I am still running kdm. I have noticed that the 
Switch User functionality within the action buttons on the top panel 
(Panel 1) is grey-out. Is there a specific xfce package I have to 
install to enable this functionality, or will I have to change my 
display manager to enable this? Below is a list of the installed xfce 
packages:

dpkg -l | grep xfce | awk '{print $2}'
gtk2-engines-xfce
libxfce4ui-1-0
libxfce4ui-utils
libxfce4util-bin
libxfce4util-common
libxfce4util6
xfce-keyboard-shortcuts
xfce4
xfce4-appfinder
xfce4-mixer
xfce4-notifyd
xfce4-panel
xfce4-session
xfce4-settings
xfce4-volumed
xfdesktop4
xfdesktop4-data


Cheers

Iain