Not a Linux wizard but as a long time user, I remembered this 2012 news from Canonical: http://blog.canonical.com/2012/06/22/an-update-on-ubuntu-and-secure-boot

Not a Linux wizard but as a long time user, I remembered this 2012 news from Canonical: http://blog.canonical.com/2012/06/22/an-update-on-ubuntu-and-secure-boot/ http://blog.canonical.com/2012/06/22/an-update-on-ubuntu-and... Perhaps the author meant there was no 'universal' Linux implementation, however it's been available for a while in certain distros.