[Bug 1574355] Re: package shim-signed 1.12+0.8-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Steve Langasek]

Yes, you should install the grub-pc package, which will remove shim-
signed and grub-efi-amd64-signed.

When you say 'installation assistant', can you tell me exactly what
interface you were shown and what it directed you to do?  Nothing should
be changing your boot loader on upgrade.

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Title:
  package shim-signed 1.12+0.8-0ubuntu2 failed to install/upgrade:
  subprocess installed post-installation script returned error exit
  status 1

Status in shim-signed package in Ubuntu:
  Incomplete

Bug description:
  ?

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: shim-signed 1.12+0.8-0ubuntu2
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  BootEFIContents:
   fw
   fwupx64.efi
  Date: Sun Apr 24 20:27:07 2016
  Df:
   S. fitxers     Blocs de 1K     En ús Disponible  %Ús Muntat a
   /dev/sda5        194596292 129772900   54915376  71% /
   /dev/sr0           1237888   1237888          0 100% /cdrom
   udev               1957680         0    1957680   0% /dev
   tmpfs               394448     11164     383284   3% /run
  EFIBootMgr: Error: command ['efibootmgr', '-v'] failed with exit code 2: efibootmgr: EFI variables are not supported on this system.
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1
   apt  1.2.10ubuntu1
  SourcePackage: shim-signed
  Title: package shim-signed 1.12+0.8-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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