Regarding only one monitor switching when changing workspaces: that's intended behaviour, see [1] You can change that using gconf-editor and setting /desktop/g

Regarding only one monitor switching when changing workspaces: that's intended behaviour, see [1] You can change that using gconf-editor and setting /desktop/gnome/shell/windows/workspaces_only_on_primary to false. [1] http://blogs.gnome.org/alexl/2011/03/22/multimonitor-support-in-gnome-shell/ http://blogs.gnome.org/alexl/2011/03/22/multimonitor-support...