I don't think it's a unity-2d specific error because I get it with compiz as well and on different systems.
This error occurs when the background is set to a fixed color (not gradient) rather than a picture but I haven't been able to figure out what causes this. The 'trailing effect' is visible even before login, when the gdm window is resized when the user selects an account. ** Changed in: unity-2d (Ubuntu) Importance: Undecided => High ** Changed in: unity-2d (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/784209 Title: Background fails to redraw -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs