Eclipse code completion broken when using XFCE

Question

I recently switched to using XFCE in Ubuntu 14 because I noticed that Eclipse runs much, much faster.

However, code completion stopped working all together.

Using the menu Edit > Content Assist > ... path still works as expected, but typing Ctrl-space does nothing at all.

Answer 1

The culprit is that IBus settings has seized control of the Ctrl-space hot key for its own "Next input" function.

Open Settings > Keyboard Input Methods dialog and change the Next Input hot key setting to anything else. I chose Ctrl-0