The default wallpaper has been mis-aglined with the grid on unity-greeter.
More info on https://bugs.launchpad.net/ubuntu/+source/ubuntu-wallpapers/+bug/1433300
The default wallpaper has been mis-aglined with the grid on unity-greeter.
More info on https:/ /bugs.launchpad .net/ubuntu/ +source/ ubuntu- wallpapers/ +bug/1433300