[Bug 1766338] Re: package shim-signed 1.34.4+13-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1

[Rod Smith]

My bug #1766637, regarding recent MAAS deployments of Bionic, has been
marked a duplicate of this one. The MAAS logs in that bug seem to
indicate that there's a problem accessing /sys/firmware/efi:

Setting up shim (13-0ubuntu2) ...
Setting up libefivar1:amd64 (34-1) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
Setting up sbsigntool (0.6-3.2ubuntu2) ...
Setting up libefiboot1:amd64 (34-1) ...
Processing triggers for man-db (2.8.3-2) ...
Setting up mokutil (0.3.0-0ubuntu5) ...
Setting up secureboot-db (1.1) ...
Can't access efivars filesystem at /sys/firmware/efi/efivars, aborting

For me, the problem is recent -- deployments done a week ago succeeded
fine, but today they're failing. (I've done no deployments in the past
few days, so I'm not sure exactly when the problem began.)

** Tags added: hwcert-server

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Title:
  package shim-signed 1.34.4+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:
  Incomplete

Bug description:
  during upgrade from 17.10 to 18.04 the package shim-signed failed to
  install

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: shim-signed 1.34.4+13-0ubuntu2
  Uname: Linux 4.15.0-041500rc7-generic x86_64
  .proc.sys.kernel.moksbstate_disabled: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden: '/proc/sys/kernel/moksbstate_disabled'
  ApportVersion: 2.20.9-0ubuntu6
  Architecture: amd64
  Date: Mon Apr 23 22:02:09 2018
  DuplicateSignature:
   package:shim-signed:1.34.4+13-0ubuntu2
   Processing triggers for shim-signed (1.34.4+13-0ubuntu2) ...
   No MOK found.
   dpkg: error processing package shim-signed (--configure):
    installed shim-signed package post-installation script subprocess returned error exit status 1
  EFITables:
   Apr 23 22:05:01 rogstrix kernel: efi: EFI v2.60 by American Megatrends
   Apr 23 22:05:01 rogstrix kernel: efi:  ACPI 2.0=0xb3047000  ACPI=0xb3047000  SMBIOS=0xc2e8b000  SMBIOS 3.0=0xc2e8a000  MPS=0xfcb30  ESRT=0xbe1b9a98 
   Apr 23 22:05:01 rogstrix kernel: esrt: Reserving ESRT space from 0x00000000be1b9a98 to 0x00000000be1b9ad0.
   Apr 23 22:05:01 rogstrix kernel: Secure boot could not be determined
  ErrorMessage: installed shim-signed package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2018-01-27 (86 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 1.34.4+13-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1
  UpgradeStatus: Upgraded to bionic on 2018-04-23 (0 days ago)

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