After dealing with the diminished functionality of 12.04 Gnome Classic/fallback, I tried using the Xubuntu-desktop.
When using Xubuntu and nvidia-settings to to enable screen1 (of 2 screens), I get this result: The screen is no longer white but has the XFCE background. Instead of it's own desktop icons, the icons from screen0 are there. There are no panels. The right-mouse-button on screen1 produces the Xubuntu popup menu. Operations with this menu occur in screen1. This allowed screenshot to operate, attached. Before enabling screen1, compiz cube and 3D windows worked. After enabling screen1, compiz cube and 3D did not work and also the desktop size was reduced to 1x1. The compiz settings were not changed. ** Attachment added: "Screenshot screen1 separate X-window w/Xuguntu" https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1002641/+attachment/3187946/+files/Screenshot%20-%2006132012%20-%2009%3A19%3A03%20AM.png -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1002641 Title: after upgrade to 12.04 amd64 Gnome Classic not properly draw second screen To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1002641/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp