Ctrl+Space not working in Ubuntu 12.04.2 LTS

Question

I'm using Ubuntu 12.04.2 LTS (64bit) and the key combination Ctrl+Space is not working with my JIdea. I'm trying to use it for code completion in the IDE.

There are no system shortcuts assigned to that. And JIdea keymap shows this shortcut for Code->Completion->Basic but I cannot even re-assign it to Ctrl+space. (I CAN change it to any other shortcut)

Basically Ctrl+Space is a no-op in JIdea, but if I set the system shortcut to some other program, it works...

Any suggestions?

Answer 1

If Smart Type Code Completion (Ctrl+Shift+Space) works while the Basic Code Completion (Ctrl+Space) does not I'd say that there is a problem with the key combination because some other program is using it.

Here's a link to another user who had problems with it for NetBeans and the solution is:

The key combination didn’t work because some other program used it. To fix this I used gconf-editor.

1. Open gconf-editor.
2. Choose desktop -> ibus -> general -> hotkey.
3. Open trigger parameter.
4. Remove Ctrl+Space key combination from the list and press OK.