After doing some more checking, I believe this to be related to Xinerama. When I deconfigured Xinerama, Unity worked fine. However, enabling it now causes both monitors to display only the wallpaper; as before, the mouse cursor still interacts with the invisible windows.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/773387 Title: Left monitor displays blank screen in Unity -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs