package grub-efi-amd64-signed 1.66.12+2.02~beta2-36ubuntu3.12 failed to install/upgrade: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1

[jean-loup]

when i start my pc i have always this message about grub-efi-amd64-signed.
I think it is because the installation has been made with wrong parameters about bios uefi

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: grub-efi-amd64-signed 1.66.12+2.02~beta2-36ubuntu3.12
ProcVersionSignature: Ubuntu 4.4.0-93.116-generic 4.4.79
Uname: Linux 4.4.0-93-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
Date: Mon Sep 11 08:12:49 2017
ErrorMessage: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.2
 apt 1.2.24
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.66.12+2.02~beta2-36ubuntu3.12 failed to install/upgrade: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1
UpgradeStatus: No upgrade log present (probably fresh install)

[jean-loup (jldeval)]

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