Bug#820036: Debian does not run on systems with Secure Boot enabled
Most new desktop/laptop PCs cannot run Debian without the firmware
being reconfigured to disable Secure Boot. This is a known problem
that is being worked on, but it hasn't so far been properly recorded
in the BTS.
This is a tracking bug which will be marked as blocked by more
specific bugs in the packages that need changes. Please don't try to
'tidy it up' by reassigning it - this issue requires changes in many
packages and by several teams.