package shim-signed 1.12+0.8-0ubuntu2 failed to install/upgrade: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1

[GUILBON Géry]

warning appeared on boot

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: shim-signed 1.12+0.8-0ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6
Uname: Linux 4.4.0-18-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
BootEFIContents:
 grub.cfg
 grubx64.efi
 MokManager.efi
 shimx64.efi
Date: Thu Apr 14 15:50:56 2016
EFIBootMgr: Error: command ['efibootmgr', '-v'] failed with exit code -11:
ErrorMessage: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1
InstallationDate: Installed on 2014-07-18 (636 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.10ubuntu1
ShimDiff: Les fichiers binaires /boot/efi/EFI/ubuntu/shimx64.efi et /usr/lib/shim/shim.efi.signed sont différents
SourcePackage: shim-signed
Title: package shim-signed 1.12+0.8-0ubuntu2 failed to install/upgrade: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1
UpgradeStatus: Upgraded to xenial on 2016-04-14 (0 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Mathieu Trudel-Lapierre (cyphermox)]

It looks like at the time of upgrade, /boot/efi may not have been mounted, but it seems to have been mounted correctly after reboot. Have you had more of these errors?

[Launchpad Janitor (janitor)]

[Expired for grub2 (Ubuntu) because there has been no activity for 60 days.]