Comment 74 for bug 1218322

I too can confirm this very annoying bug/problem.

I tried to use the method suggested by William Hua ( #44) (addtional ppa) and in general it works but not as good as I would like; let me explain:
1) In the 'Text Entry' window for 'Switch to next source susing:' I used the 'Shift+Alt' combination and for 'Switch to previous source using:' the 'Shift+Control' combination. These are displayed as 'Shift+Alt+Next Group' and 'Shift+Control L'
2) The first combination ('Shift+Alt') does work and changes the keyboard in cyclical manner as expected (English (US) -> Greek -> English (US), etc., since I have two input sources in use the 'English (US)' and 'Greek'. The second combination seemigly does nothing.
3) In order for the above to work the 'Use the same source for all windows' must be selected.
4) The keyboar indicator does not show the change even when the keyboard is changed.

As for the other suggestion about using the gnome tweek tool there must be another bug because it is not possible to run it in my system: it starts without a problem but after a second or two it closes without warning.