Enable Tamil and Sinhala input methods

Here how I enabled Tamil (Renganathan IM) and Sinhala (Wijesekara) on Ubuntu 11.

Step 1 : As a root, do :

apt-get install ibus im-switch ibus-m17n m17n-db m17n-contrib ttf-tamil-fonts language-pack-ta-base ttf-sinhala-lklug language-pack-si-base


Step 2 : Just run from your user account (Not as root) :
rm -f ~/.xinput.d/* ; im-switch -z all_ALL -s ibus

Thereafter restart the session (Just logoff and login)

Thereafter do "ibus-setup" and configure your prefered input setup. In addition to that you can configure where it should appear in your screen.

Enjoy!

Reference : http://sinhala.sourceforge.net/