[Bug 1995165] Re: Errors encountered while processing "grub-efi-amd64-signed" and "shim-signed"

[Mike Lee]

This is also happening with us with Ubuntu 20.04 on the ARM
architecture.

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https://bugs.launchpad.net/bugs/1995165

Title:
  Errors encountered while processing "grub-efi-amd64-signed" and "shim-
  signed"

Status in dpkg package in Ubuntu:
  New

Bug description:
  Yesterday, after executed command "apt dist-upgrade", I got error
  '
  Reading package lists... Done
  Building dependency tree
  Reading state information... Done
  Calculating upgrade... Done
  0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  1 not fully installed or removed.
  After this operation, 0 B of additional disk space will be used.
  Do you want to continue? [Y/n] y
  Setting up grub-efi-arm64-signed (1.173.2~18.04.1+2.04-1ubuntu47.4) ...
  Installing for arm64-efi platform.
  grub-install: error: efibootmgr: not found.
  dpkg: error processing package grub-efi-arm64-signed (--configure):
   installed grub-efi-arm64-signed package post-installation script subprocess returned error exit status 1
  dpkg: dependency problems prevent processing triggers for shim-signed:
   shim-signed depends on grub-efi-amd64-signed (>= 1.167~) | grub-efi-arm64-signed (>= 1.167~); however:
    Package grub-efi-amd64-signed is not installed.
    Package grub-efi-arm64-signed is not configured yet.

  dpkg: error processing package shim-signed (--configure):
   dependency problems - leaving triggers unprocessed
  Errors were encountered while processing:
   grub-efi-arm64-signed
   shim-signed
  E: Sub-process /usr/bin/dpkg returned an error code (1)
  '''

  I found out some upgraded packages may leading to this issue:

  grub-efi-arm64/bionic-updates 2.04-1ubuntu47.4 arm64 [upgradable from: 2.04-1ubuntu44.1.2]
  grub-efi-arm64-bin/bionic-updates 2.04-1ubuntu47.4 arm64 [upgradable from: 2.04-1ubuntu44.1.2]
  grub-efi-arm64-dbg/bionic-updates 2.04-1ubuntu47.4 arm64
  grub-efi-arm64-signed/bionic-updates 1.173.2~18.04.1+2.04-1ubuntu47.4 arm64 [upgradable from: 1.167~18.04.5+2.04-1ubuntu44.1.2]

  Current, I cannot install any packages, got the same error above.

  This issue only happen with Ubuntu 18.04.6 aarch64.

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