Adding Xfce4 to the GDM sessions menu

[Jaap Haitsma <jaap@haitsma.org>]

Hi,

Up till now I was always running Gnome, but yesterday I decided to have 
a go at Xfce4 so installed the Xfce4 packages. This seemed to go OK, but 
I'm still not able to get it listed in the GDM sessions menu. I already 
did quite some googling but still no luck.

In /etc/gdm/Sessions there is an xfce4 script which has the right 
permissions.

What I cannot find out where gdm gets the info about the available 
sessions. For example I first had also KDE installed and it was in the 
session menu. Then I wiped away KDE and it was still in the sessions 
menu. I think after some update of gdm it was removed from the session 
menu, but in /etc/gdm/Sessions there is still a KDE script.

So how can I get a session and in particular Xfce4 added to GDM?

Jaap

BTW I'm running SID