The issue seems to be related to GRUB. If I upgrade my working-in-SB- disco VM to focal's grub-efi-arm64-signed, it now fails. If I downgrade my *not*-working-in-SB-focal VM to disco's grub-efi-arm64-signed, it now boots in SB mode.
** Also affects: grub2 (Ubuntu) Importance: Undecided Status: New ** Also affects: grub2-signed (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1862279 Title: arm64 Secure Boot fails w/ "error: cannot load image." To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1862279/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs