How to type special character on ubuntu
It's Ctrl+Shift+u all together, and an underline will appear under the u, then you type the hexadecimal value for the Unicode character, and then press Space or Enter to confirm it.
Another way:
Install gucharmap (GNOME [Unicode] Character Map), if it is not already installed
Run gucharmap
Select "Kannada" under Unicode Block
Find the character(s) you want, double click on each of them; they appear in "text to copy"
Click on the "copy" button to put them into the paste buffer
Paste into the document or file where you want the character(s) to appear