[Bug 1696342] Re: package shim-signed 1.28+0.9+1474479173.6c180c6-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Steve Langasek]

This appears to be a bug unrelated to the ones we currently know about,
but unfortunately the logs attached to the report don't give a complete
picture.  DpkgHistoryLog shows:

Start-Date: 2017-06-07  10:36:19
Commandline: apt-get --no-upgrade -o Acquire::gpgv::Options::=--ignore-time-conflict -y install grub-efi-amd64-signed
Install: grub-efi-amd64-bin:amd64 (2.02~beta3-4ubuntu2, automatic), grub-efi-amd64:amd64 (2.02~beta3-4ubuntu2, automatic), grub-efi-amd64-signed:amd64 (1.80+2.02~beta3-4ubuntu2)
Error: Sub-process /usr/bin/dpkg returned an error code (1)
End-Date: 2017-06-07  10:36:26

DpkgTerminalLog shows:

Log started: 2017-06-07  10:36:19
Log ended: 2017-06-07  10:36:26

So dpkg has reported an error but there is no output from the grub
packages to suggest why.

And your /boot/efi directory appears to be fully populated.

If you run 'sudo dpkg --configure -a' from a terminal, does this do
anything?

** Changed in: shim-signed (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1696342

Title:
  package shim-signed 1.28+0.9+1474479173.6c180c6-1ubuntu1 failed to
  install/upgrade: subprocess installed post-installation script
  returned error exit status 1

Status in shim-signed package in Ubuntu:
  Incomplete

Bug description:
  Appeared after loading to a newly installed system first time through
  recovery mode (resuming to normal boot).

  Ubuntu 17.04 installed according with
  https://help.ubuntu.com/community/ManualFullSystemEncryption

  ProblemType: Package
  DistroRelease: Ubuntu 17.04
  Package: shim-signed 1.28+0.9+1474479173.6c180c6-1ubuntu1
  ProcVersionSignature: Ubuntu 4.10.0-22.24-generic 4.10.15
  Uname: Linux 4.10.0-22-generic x86_64
  .proc.sys.kernel.moksbstate_disabled: 0
  .sys.firmware.efi.efivars.MokSBStateRT-605dab50-e046-4300-abb6-3dd810dd8b23: Error: [Errno 2] No such file or directory: '/sys/firmware/efi/efivars/MokSBStateRT-605dab50-e046-4300-abb6-3dd810dd8b23'
  .sys.firmware.efi.efivars.SecureBoot-8be4df61-93ca-11d2-aa0d-00e098032b8c: 

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