[Bug 1905198] Re: package shim-signed 1.40.4+15+1552672080.a4a1fbe-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 12

[Apport retracing service]

** Tags removed: need-duplicate-check

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Title:
  package shim-signed 1.40.4+15+1552672080.a4a1fbe-0ubuntu2 failed to
  install/upgrade: installed shim-signed package post-installation
  script subprocess returned error exit status 12

Status in shim-signed package in Ubuntu:
  New

Bug description:
  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.
  NTFS signature is missing.
  Failed to mount '/dev/sdb': Invalid argument
  The device '/dev/sdb' doesn't seem to have a valid NTFS.
  Maybe the wrong device is used? Or the whole disk instead of a
  partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
  dpkg: error processing package shim-signed (--configure):
   installed shim-signed package post-installation script subprocess returned error exit status 12
  Errors were encountered while processing:
   shim-signed

  Upgrade complete

  The upgrade has completed but there were errors during the upgrade
  process.

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: shim-signed 1.40.4+15+1552672080.a4a1fbe-0ubuntu2
  ProcVersionSignature: Ubuntu 4.15.0-124.127-generic 4.15.18
  Uname: Linux 4.15.0-124-generic x86_64
  .proc.sys.kernel.moksbstate_disabled: Error: [Errno 2] No such file or directory: '/proc/sys/kernel/moksbstate_disabled'
  ApportVersion: 2.20.11-0ubuntu27.12
  Architecture: amd64
  BootEFIContents:
   BOOTX64.CSV
   grub.cfg
   grubx64.efi
   mmx64.efi
   shimx64.efi
  CasperMD5CheckResult: skip
  Date: Sun Nov 22 20:34:57 2020
  EFIBootMgr: Error: command ['efibootmgr', '-v'] failed with exit code 2: EFI variables are not supported on this system.
  EFITables:
   
  ErrorMessage: installed shim-signed package post-installation script subprocess returned error exit status 12
  Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: /usr/bin/python2.7, Python 2.7.18, python-is-python2, 2.7.17-4
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu3
   apt  2.0.2ubuntu0.1
  SourcePackage: shim-signed
  Title: package shim-signed 1.40.4+15+1552672080.a4a1fbe-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 12
  UpgradeStatus: Upgraded to focal on 2020-11-22 (0 days ago)

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