I updated from 10.04 to 12.04 yesterday. I used Gnome instead of Unity.
I also was configured to have a single row of 6 screens/desktops in the "Workspace Switcher Preferences". After the upgrade this was reset to be two rows of two screens/desktops.
When I set the preferences to again have a single row of 6 screens/desktops I initially see them show up on the bottom toolbar/panel.
The problems start when I try to switch to another screen from screen 0. All decorations, toolbars, etc., disappear. I cannot force a manual switch between screens. All I see is the background.
If I do the Ctrl-Alt-backspace to logout then log in again I get the toolbars/panels but they have been reset to 2 high and 2 wide instead of the single row of 6 that I set in the preferences.
What changed between 10.04 and 12.04 that would cause this and what do I need to do to get back the environment I wish to operate in?
(I am accustomed to having specific apps on specific screens/desktops so changing to a 2x2 model is not desirable.)
Thanks for any help you may provide on this problem.