[Bug 1767276] Re: Could not delete variable: Interrupted system call (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)

[mario]

I have the same issue, Venkatesh's solution works for me but every time
i do an upgrade it return.

I upgraded to 18.04 from 17.10

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Title:
  Could not delete variable: Interrupted system call (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]
  The apt-get update option does not fix this.

  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
  NonfreeKernelModules: wl
  .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: Thu Apr 26 19:06:57 2018
  EFITables:
   Apr 27 11:18:03 spthree kernel: efi: EFI v2.40 by INSYDE Corp.
   Apr 27 11:18:03 spthree kernel: efi:  SMBIOS=0x9c669000  ESRT=0x9c771418  ACPI 2.0=0x9cffe014
   Apr 27 11:18:03 spthree kernel: secureboot: Secure boot could not be determined (mode 0)
   Apr 27 11:18:03 spthree kernel: esrt: Reserving ESRT space from 0x000000009c771418 to 0x000000009c771450.
  ErrorMessage: installed shim-signed package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2017-12-16 (131 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  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 2018-04-26 (0 days ago)

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