I think this is something you can tweak in compizconfig-settings- manager(ccsm) though not sure where.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/767574 Title: Unity does not allow completely dragging windows to secondary screen -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs