Here’s how you can install KDE in Ubuntu Natty. 1. Open your Synaptic Package Manager. 2. Search for the KDE package. There are three options for you:
kde-plasma-desktop: the KDE plasma desktop and a minimal set of applications kde-standard: the KDE plasma desktop and a minimal set of applications kde-full: the full suite of KDE (not recommended. If you want the full suite, you might as well install Kubuntu)
Pick the one most suitable for you and select “Mark for installation”. A window will pop up showing all its dependencies. Click Mark. Once it is done, click Apply.
During the installation, a window will pop to ask which is your default display manager. If you want to use KDE permanently (or set your Ubuntu to boot into KDE automatically), select “kdm”. If not, keep it as “gdm”.
Once the installation has finished, log out of your current desktop session and re-login with the KDE desktop.
That’s it. Note: The current version of KDE as of this post is still 4.6.2. KDE 4.6.3 will be added to the Ubuntu repository over the weekend. As long as you upgrade your system regularly, you should be getting KDE 4.6.3 in no time.
