I installed openSUSE 12.1 yesterday and it doesn't show some unicode characters, like Kannada characters.
I'm using KDE.
Teaching you how to fish:
The other two mentioned there are available as downloads from the Web and require manual installation. Unpack the font files from the archive, if any. In a file manager, bring up the context menu for a font file and select
Restart any application in which you intend to intend to use a new font.