I have secureboot enabled, I followed RPMFusion guide. Everything was working as I wanted. GRUB Menu was boring and fonts were too small, So I installed vinceliuice/grub2-themes. Now everytime before GRUB loads, grub-core/kern/efi/sb.c... prohibited by secure boot policy message shows up. And fonts are even harder to read because it’s small and default font is still bad. Tried uninstalling and the borders are all messed up as if it’s missing font. But grub2-emu shows everything fine. Any advice?
I had similar problems, followed some tips I found and the boot works, but with an error message, similar to yours.
Well, checking out I found what seems to be the problem, both in foruns and Fedora discussions.
You can read this and if make sense to you, that’s what I choose to do.
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