Ubuntu 12.10 uses ibus by default and scim is having some problems for telugu-rts(phonetic,transliteration typing). Other Indic scripts(Hindi, Tamil etc.) might have the same problem. For idiosyncrasies of working with indic transliteration, see this explanation . The following procedure works for telugu-rts. $ sudo apt-get install ibus-m17n m17n-contrib $ im-switch Select ibus in the available input methods. Logout and login. ibus daemon should to be started(ps xa | grep ibus). $ ibus-setup In "Input Method" tab, tick "Customize active input methods" In "Select an input method" drop-down, select Telegu -> rts(m17n) In some app(gedit etc. ), press ctrl+space(to select ibus) and start typing... à°ªంà°¡à°— à°šేà°¶ుà°•ో మరి paMDaga chESukO mari