Workspaces in overlay and keyboard disappeared in Ubuntu 14.04 / Gnome

How хан I повторно конфигурировал the workspaces in Ubuntu 14.04.3 with GNOME? Two days ago I was able to переключатель using keyboard shortcuts CTRL + ALT + LEFT OR RIGHT and drag and drop frames from the Expo into в separate workspace.

Now, despite being enabled in the Кеибоард Сорткутс, switching to в new workspace does not work. In addition, the Expo - one workspace видимый when set to Dynamics in:

Tweak Tools> Workspaces> Воркспасе Креатион

When above is set to Static the Number of Workspaces пахал shown, but they пашите exact ты отвечаешь of the first one: see image of workspaces replicated when set to 4 static

So far, with не luck, I have rebooted, reinstalled Unity, enabled CompizConfig> Десктоп Валь + Expo + Десктоп Сисе (2x2), reinstall ubuntu-desktop, reinstall ubuntu-gnome-desktop^.