For some time now content assist and the command panel have been broken in Eclipse and Ubiquity running under Ubuntu; they wouldn’t trigger the pop-up menues when pressing CRTL+Space.
The reason is ibus intercepting that key combination and it’s just as easily solved :
- Open gconf-editor.
- Choose desktop -> ibus -> general -> hotkey.
- Open trigger parameter.
- Remove Ctrl+Space key combination from the list and press OK.