[Bug 1767474] Re: Could not delete variable: Invalid argument (package shim-signed 1.34.9+13-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1)

[Mathieu Trudel-Lapierre]

*** This bug is a duplicate of bug 1805490 ***
    https://bugs.launchpad.net/bugs/1805490

** This bug has been marked a duplicate of bug 1805490
   [master] Grub2 Failed to install "efibootmgr failed to register the boot entry: Block device required. / Could not delete variable: Invalid argument"

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Title:
  Could not delete variable: Invalid argument (package shim-signed
  1.34.9+13-0ubuntu2 failed to install/upgrade: installed shim-signed
  package post-installation script subprocess returned error exit status
  1)

Status in shim-signed package in Ubuntu:
  Confirmed

Bug description:
  Users experiencing this bug are most likely affected by
  <https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1734147> and
  have their firmware in an incorrect state which prevents bootloader
  updates. Please see that bug for information on how to recover your
  firmware state.

  [Original Description]
  Ubuntu 18.04 LTS (error while upgrading)
  shim-signed:
    Installed: 1.34.9+13-0ubuntu2
    Candidate: 1.34.9+13-0ubuntu2
    Version table:
   *** 1.34.9+13-0ubuntu2 500
          500 http://nl.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
          100 /var/lib/dpkg/status

  Issue occurred while doing a dist-upgrade from 17.10. to 18.04.

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: shim-signed 1.34.9+13-0ubuntu2
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  .proc.sys.kernel.moksbstate_disabled: Error: [Errno 2] No such file or directory: '/proc/sys/kernel/moksbstate_disabled'
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  Date: Fri Apr 27 20:23:29 2018
  EFIBootMgr:
   BootCurrent: 0001
   Timeout: 0 seconds
   BootOrder: 0001
   Boot0000* Windows Boot Manager	HD(1,GPT,e400d6a3-e888-4f56-8a13-07967d676325,0x800,0xfa000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}...7................
   Boot0001* ubuntu	HD(1,GPT,a2f20e33-80dd-4536-8fd0-d2807bca7bdb,0x800,0x100000)/File(\EFI\ubuntu\shimx64.efi)
  EFITables:
   apr 27 20:29:30 k2so kernel: efi: EFI v2.31 by American Megatrends
   apr 27 20:29:30 k2so kernel: efi:  ACPI=0xdae9b000  ACPI 2.0=0xdae9b000  SMBIOS=0xf0000
   apr 27 20:29:30 k2so kernel: secureboot: Secure boot could not be determined (mode 0)
  ErrorMessage: installed shim-signed package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2018-04-17 (9 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
  Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3
  PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2
   apt  1.6.1
  SecureBoot: 6   0   0   0   0
  SourcePackage: shim-signed
  Title: package shim-signed 1.34.9+13-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1
  UpgradeStatus: Upgraded to bionic on 2018-04-27 (0 days ago)

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