(1) Double click on ibus-keymagic_1.5.2_i386.deb (or) ibus-keymagic_1.5.2_amd64.deb
(2) Wait until ubuntu software center is appeared and click on install.
(3) Logout account for the first time.
(4) Please go to system setting -> language support
(5) Choose ibus (input system) and click on apply system wide.
(6) Logout account for second time.
(7) Please go to keyboard layout in system setting
(8) Add keyboard.