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.
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.