This bug also affecting me, after upgrade the server is in reboot loop because first kernel is crashing or does not exist, I must select manually other kernel. After each upgrade there is same error that grub cant be upgraded.
Installing grub to /boot/efi. Installing for x86_64-efi platform. grub-install: warning: Internal error. grub-install: error: failed to register the EFI boot entry: Operation not permitted. Installing grub to /boot/efi. Installing for x86_64-efi platform. Installation finished. No error reported. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1872212 Title: grub-install: Operation not permitted To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1872212/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
