Enable various input Methods for example Chinese.

apt-get install ubuntu-defaults-zh-cn ibus-pinyin  ibus ibus-clutter

im-switch -s ibus

Logout and login back.

ibus-setup

Add the input methods you want.

• You need to add ibus-daemon to your startup applications:

    Name:    ibus-daemon
    Command: ibus-daemon -drx

• You can tell if the ibus-daemon is running by the small keyboard in the top status bar.
• If your IBus icon happen to be missing, use the following command. ibus-daemon -drx