How do I install LXDE / Lubuntu?

I want to install lubuntu on my current (pre-existing) Ubuntu Install because of it's light-weight footprint.

Can I preserve currently installed apps after installation?

Solution 1:

For 11.10 and 12.04

For 11.10 and 12.04, you'll need to do this through a terminal.

Open up a terminal (Super, then type Terminal into the dash), then run the following:

sudo apt-get update && sudo apt-get install lubuntu-desktop

Or install via the Software Center:

You will get asked to enter your password, and you will also be asked to choose between LightDM and LXDM - I suggest using LightDM.

Once that is done, log out, and then select Lubuntu as your desktop session:

Solution 2:

For 10.04 and 11.04

Lubuntu uses the LXDE desktop enviroment, which is less resource intensive than GNOME2. Other than that they are the same.

To install Lubuntu you need to do this:

Go to the Synaptic package manager and search for:

       lubuntu-desktop
       lubuntu-restricted-addons
       lubuntu-artwork
       lubuntu-core
       lubuntu-default-settings
       lubuntu-icon-theme
       plymouth-lubuntu-logo
       lubuntu-restricted-extras

(lubuntu-desktop is a meta package so it should install all the other packages) Install it and well...that's it.

Now whenever you login in GDM you can choose from Ubuntu and Lubuntu

You can search it on the Ubuntu Software Center as well.