lightdm themes are called greeters. By default, Xubuntu uses the lightdm-gtk-greeter. Unity, on the other hand, uses the unity-greeter. You can install other greeters and use them. To do so, install the package and change the "greeter-session=" line in /etc/lightdm/lightdm.conf file to match the installed greeter. So for example, to use the unity-greeter in xubuntu:
Originally Posted by JKyleOKC
It looks like the *buntus come with unity-greeter, lightdm-gtk-greeter, lightdm-kde-greeter and lightd-webkit-greeter in the official repositories. I've also come across references to a crowd-greeter, but you may have to find the source and install it.
sudo apt-get install unity-greeter
gksu leafpad /etc/lightdm/lightdm.conf
..and test with
You could also edit the existing greeter files (for lightdm-gtk-greeter look at /usr/share/lightdm-gtk-greeter/greeter.ui) or you could create your own greeter (see: http://www.mattfischer.com/blog/?p=5).
This link may also help: https://wiki.ubuntu.com/LightDM.
Apparently, this 30 second delay is embedded in the code and the only way to currently change it is to make the change in the code and recompile.
Also, on logging out or shutting down the system, I get a dialog that times out for 30 seconds. That's okay but I would like to shorten the period. Where is the script or configuration file that controls this interval?