Virtualbox + xfce
Virtualbox runs Ubuntu very well, especially with Guest Additions installed.
However, one thing that won’t work on it is Compiz. This is because Compiz cannot support the graphics card from Virtualbox.
This means that if you want any sort of desktop effects, you can’t use Compiz, Beryl, or Compiz-fusion.
However, if you only need basic desktop effects, there is a workaround–xfce.
xfce is a lightweight desktop environment that is designed with older or less powerful hardware in mind.
For Ubuntu, the easiest way to install xfce is to go into Synaptics Package Manager, search for xfce, and install the main xfce package from there.
After you do so, log out. When your login screen appears, click “sessions” and select the “xfce” option. Log in as normal.
When you finish logging in and xfce finishes loading, right-click the desktop, go to the “Settings” menu, and click “Settings Manager”. You will then be presented with a grid of options.
To enable desktop composition, click on “Window Manager Tweaks”. Click on the “Compositor” tab. Check the box that says “Enable display compositing”. You can then play around with its options, like making inactive windows translucent, etc.
You can also play around with the other options in the Settings Manager.
Why would you want a compositor besides having some shadows and transparency?
A compositor is often a dependency for many eye candy things.
For example, Avant Window Navigator (AWN), which is a dock (in the style of the Mac OS X one), requires a compositor to work. AWN can do stacks, reflections, and a whole lot of cool stuff.
Here is a screenshot of my computer. You can roll up a window to show only its title bar, add transparency to inactive windows, change your theme (I’m using a Mac-like one), arrange the titlebar buttons, make windows snap to each other, and do lots of other cool things. The screenshot also has a heavily customized AWN bar.
