For those without artwork or just the test card can you please try "sudo update-alternatives --config usplash-artwork.so" and choose one of the artwork choices than run "sudo update-initramfs -u" than reboot.
-- usplash resolution error in boot and halt https://launchpad.net/bugs/60621 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
