'EFI variables are not supported on this system.' That's quite interesting, as it implies the installer was booted via UEFI, but that, once installed, the system is booting Ubuntu via BIOS fallback compatibility. That is definitely not a case we could detect from the installer whether you could successfully reboot into Ubuntu or not!
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1935718 Title: error: failed to register the EFI boot entry: Operation not permitted. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1935718/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
