Quote Originally Posted by kevin1 View Post
What should I try to get Secure Boot working?
First, be aware that SecureBoot is recent, and GRUB/Ubuntu/Boot-Repair are not always able to work with SecureBoot enabled.
But we can have a try.
Please enable SecureBoot in your BIOS, then run Boot-Repair --> Advanced Options --> "GRUB options" tab --> tick "SecureBoot" --> Apply.
Tell us the new URL that will appear.
Reboot, and tell us what you observe.