Session manager

[Phil]

Thank you for reading this.

I have installed Ubuntu and Kubuntu desktops. A Google search mentions a 
session manager to choose one or the other but his seems to only apply 
to earlier versions rather than version 14.04.

I attempted to remove the Ubuntu desktop as follows:

sudo apt-get remove ubuntu-desktop

This ran and seemed to remove files and when I elected to restart, the 
Kubuntu logo was displayed. On restart the Kubuntu logo was again 
displayed but then reverted to the Ubuntu password dialog and started a 
Ubuntu desktop session.

So, how do I remove the Ubuntu desktop and set Kubuntu as my default 
desktop?

-- 
Regards,
Phil