(In reply to Andrei Borzenkov from comment #30) > (In reply to Leo Davis from comment #29) > > It would require more investigation to see if SecureBoot is > > really on or not > > In Linux you could use "mokutil --sb-state". You were right, SecureBoot was not enabled. When I re-enabled it I was not able to boot GRUB (booted in a loop). I did a "mokutil --reset" and rebooted, did the reset in MokManager, rebooted, reran the sequence of steps from step 5 in comment 21. I was not able to boot to GRUB after that either (booted in a loop).