ghook's suggestion works well on Ubuntu 10.04 (lucid) except that /usr/lib/gdm/gdmlogin does not exist. However, I changed that to /usr/lib/gdm/gdm-xdmcp-chooser-slave (as shown below) and that works beautifully!
/etc/gdm/custom.conf: [daemon] RemoteGreeter=/usr/lib/gdm/gdm-xdmcp-chooser-slave
[xdmcp] Enable=true
I tested using: $ sudo X -query <xdmcphost> :1
ghook's suggestion works well on Ubuntu 10.04 (lucid) except that /usr/lib/ gdm/gdmlogin does not exist. However, I changed that to /usr/lib/ gdm/gdm- xdmcp-chooser- slave (as shown below) and that works beautifully!
/etc/gdm/ custom. conf: /usr/lib/ gdm/gdm- xdmcp-chooser- slave
[daemon]
RemoteGreeter=
[xdmcp]
Enable=true
I tested using:
$ sudo X -query <xdmcphost> :1