Keyboard shortcuts for switching language input method no longer works after updates
Solution 1:
Noticing from your previous questions:
- How do I get my Compiz window decoractions back?
- Laptop using 14.04 won't get past login GUI
That you are using ppa:eugenesan/ppa (same as me) which has couple of inconsistent package builds with higher versions then the ones in Ubuntu repository.
As it seems bringing many issues for you. Better to disable/remove it and purge installed packages from it and reinstall them from Ubuntu repo. I case you need specific app from it, make only selective upgrade/install from it, avoid blind upgrade.