How to set up Japanese input in Ubuntu —05 December 2010

The official documentation is here, but incomplete: https://help.ubuntu.com/community/JapaneseInput

A couple of steps are missing, this is how I did it in Ubuntu 10.10.

1. sudo apt-get install anthy ibus-anthy
2. Go to System / Preferences / Keyboard Input Methods
3. It asked me twice if I want to start the ibus service. Probably some bug, just say Yes.
4. Go to Input Method tab
5. Select Anthy from the Select an input method drop-down menu

After this you should be able to switch between Japanese/English input with Control + Space.

To make this permanent, you need to set one more thing:

1. Go to System / Administration / Language Support
2. Set Keyboard input method system to ibus