[Bug 1872212] Re: grub-install: Operation not permitted

[Ben McCann]

Me to. I upgraded all out-of-date packages and the grub-efi-amd64-signed
upgrade failed as shown above. This was an *upgrade* on bare metal (A
Ryzen 3600 on a B550 motherboard) that had been booting just fine prior
to this error. The '--no-nvram' work-around prevents the error but I
have no idea if UEFI has been configured correctly.

FWIW, the efibootmgr program displays rational looking EFI entries:

sudo efibootmgr
BootCurrent: 0000
Timeout: 1 seconds
BootOrder: 0000,0002
Boot0000* ubuntu
Boot0002* Windows Boot Manager

and the grub update does install new (or at least touch) the files in
/boot/efi/EFI/ubuntu.

I'm about to reboot this machine to see whether my home file server is
borked or not :-(

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https://bugs.launchpad.net/bugs/1872212

Title:
  grub-install: Operation not permitted

Status in grub2-signed package in Ubuntu:
  Confirmed

Bug description:
  I'm using Ubuntu 20.04 beta, upgraded from 19.10. 
  When doing the last upgrade I got an error message from grub.

  When I run ›dpkg-reconfigure shim-signed‹ I get this error:

  Installing for x86_64-efi platform.
  grub-install: warning: Internal error.
  grub-install: error: failed to register the EFI boot entry: Operation not permitted.

  Since then I didn't reboot, for I'm afraid it won't work.

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