[Bug 1874315] Re: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 10

[Miguel A. Martinez]

Same problem here after upgrading from 19.10

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https://bugs.launchpad.net/bugs/1874315

Title:
  installed grub-efi-amd64-signed package post-installation script
  subprocess returned error exit status 10

Status in grub2-signed package in Ubuntu:
  Confirmed

Bug description:
  After upgrade from ubuntu 19.10 to ubuntu 20.04:

  sudo apt install -f
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  2 not fully installed or removed.
  After this operation, 0 B of additional disk space will be used.
  Setting up grub-efi-amd64-signed (1.142+2.04-1ubuntu26) ...
  dpkg: error processing package grub-efi-amd64-signed (--configure):
   installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 10
  No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                            dpkg: dependenc
  y problems prevent configuration of shim-signed:
   shim-signed depends on grub-efi-amd64-signed | grub-efi-arm64-signed; however:
    Package grub-efi-amd64-signed is not configured yet.
    Package grub-efi-arm64-signed is not installed.

  dpkg: error processing package shim-signed (--configure):
   dependency problems - leaving unconfigured
  Errors were encountered while processing:
   grub-efi-amd64-signed
   shim-signed
  E: Sub-process /usr/bin/dpkg returned an error code (1)

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