Also note: 1920x1080 wallpaper will get stretched on higher-res devices like the Nexus 10 (2560x1600). If you fix that, then single-pixel graininess is probably OK when the image resolution is at least that of the device.
See also: sudo apt-get install gnome-backgrounds dpkg -L gnome-backgrounds -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1252601 Title: Default (purple) background wallpaper is grainy and low quality To manage notifications about this bug go to: https://bugs.launchpad.net/unity8/+bug/1252601/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs