[LightDM] Can LightDM work with an existing X server socket?

[Shahim Essaid]

Hi all,

I'm setting up an LXC container for Ubuntu 13.10 where the X server is
started in the host on vt6. The unix socket and authority file are
then mounted in the LXC container. I can start X sessions and
applications from the container but I can't get LightDM to use this
server.

I would really like to have the container's LightDM/Ubuntu greeter to
automatically start on this display when the container is started to
allow a graphical login. I'm aware of other options (XDMCP, vnc, etc.)
but I'm trying to do it directly through the mounted unix domain
socket. I've been trying to configure X to be started and managed by
LightDM in the container but haven't been able to do that so far.

Is this possible?

Thank you,
Shahim