Comment 12 for bug 133430

randon: why did you change metacity to gtk-window-decorator? The latter is just responsible to draw borders and titlebar under *compiz*. If you want to disable 3d effects and use gnome, you most likely want metacity there. Then, the program must be running when you rotate the screen (try launching that from a terminal and letting it open). If that works, you can add the program to your session.