[Bug 1683705] 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]

The error in your log is:

Setting up shim-signed (1.28+0.9+1474479173.6c180c6-1ubuntu1) ...
Gtk-WARNING **: Imposible encontrar el motor de temas en la ruta al _modulo: «adwaita», at /usr/lib/x86_64-linux-gnu/perl5/5.24/Gtk2.pm line 126.
Gtk-WARNING **: Imposible encontrar el motor de temas en la ruta al _modulo: «adwaita», at /usr/lib/x86_64-linux-gnu/perl5/5.24/Gtk2.pm line 126.
Instalando para plataforma x86_64-efi.
grub-install: error: no se puede encontrar el directorio EFI.

Why is /boot/efi not mounted on your system?  Please attach /etc/fstab
from the affected system.

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

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https://bugs.launchpad.net/bugs/1683705

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:
  unknow

  ProblemType: Package
  DistroRelease: Ubuntu 17.04
  Package: shim-signed 1.28+0.9+1474479173.6c180c6-1ubuntu1
  ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8
  Uname: Linux 4.10.0-19-generic x86_64
  .proc.sys.kernel.moksbstate_disabled: 0
  .sys.firmware.efi.efivars.MokSBStateRT-605dab50-e046-4300-abb6-3dd810dd8b23: Error: [Errno 2] No existe el archivo o el directorio: '/sys/firmware/efi/efivars/MokSBStateRT-605dab50-e046-4300-abb6-3dd810dd8b23'
  .sys.firmware.efi.efivars.SecureBoot-8be4df61-93ca-11d2-aa0d-00e098032b8c: 

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