Are you running compiz? Were the windows always black or did this happen overnight?
Workaround: Disable visual effects (System/Preferences/Appearance) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/668005 Title: Display shows black boxes rather than application windows -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
