Are you using Compiz or not? You have to be using Compiz for there to be a transparent background.
** Changed in: cairo-dock (Ubuntu) Status: New => Incomplete -- dock has a black background, not transparent https://bugs.launchpad.net/bugs/291734 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs