I started out with Ubuntu 12.04 LTS. Then, I installed kde (by using
sudo apt-get install plasma-desktop), removed unity (by using
sudo apt-get remove unity unity-2d unity-2d-shell compiz), installed kubuntu-full and removed ubuntu-core, ubuntu-desktop and ubuntu-full.
Then, I did
sudo do-release-upgrade and went to 12.10. Then, I did
sudo do-release-upgrade -m=kubuntu to hopefully complete the switch to Kubuntu 13.04.
After That, I decided that I wanted unity back to develop phone apps with the Ubuntu SDK. And with the good Unity Integration with KDE applications, I tried to install unity using
sudo apt-get install unity unity-2d. Installation completes without error. But when I logged out, Unity wasn't an option. Restarted System, Booted into text mode, un-installed
kde-lightdm-greeter and installed
sudo lightdm brings me to what looks like something between GNOME 3 and Unity in the Login Screen. Buttons were not visible, Icons misplaced and sometimes not present and when logging in, takes me to KDE. Can anyone help me with this?