The Inscript Keyboard is one of the 'de facto' standards for Typing in Malayalam on Linux.
You can use the following steps to configure and enable easy and professional Malayalam Typing capability on your Ubuntu 12.04 / 12.10 desktop:
Click on the Ubuntu Dash Icon (the top-most icon in your Unity Dashbar) that is by default found towards the left end of your desktop),
When the Dash shows up, type in the following search string: "Keyboard Layout", and click on the icon that shows up in the search results.
