[Bug 1917174] Re: package grub-efi-amd64-signed 1.155.4+2.04-1ubuntu35.4 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[geole0]

Hello
So, in chroot mode
root at ubuntu:/# grub-install -
Installation pour la plate-forme x86_64-efi.
grub-install : attention : Cannot read EFI Boot* variables.
grub-install : attention : read_file: could not read from file: Erreur d'entrée/sortie.
grub-install : attention : vars_get_variable: read_file(/sys/firmware/efi/vars/Boot002A-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var) failed: Erreur d'entrée/sortie.
grub-install : attention : efi_get_variable: ops->get_variable failed: Erreur d'entrée/sortie.
grub-install : erreur : failed to register the EFI boot entry: Erreur d'entrée/sortie.

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https://bugs.launchpad.net/bugs/1917174

Title:
  package grub-efi-amd64-signed 1.155.4+2.04-1ubuntu35.4 failed to
  install/upgrade: installed grub-efi-amd64-signed package post-
  installation script subprocess returned error exit status 1

Status in grub2-signed package in Ubuntu:
  Confirmed

Bug description:
  I didn't notice anything wrong, beside the window with the bug report.

  ProblemType: Package
  DistroRelease: Ubuntu 20.10
  Package: grub-efi-amd64-signed 1.155.4+2.04-1ubuntu35.4
  ProcVersionSignature: Ubuntu 5.8.0-44.50-generic 5.8.18
  Uname: Linux 5.8.0-44-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu50.5
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Wed Feb 24 12:18:03 2021
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  Python3Details: /usr/bin/python3.8, Python 3.8.6, python3-minimal, 3.8.6-0ubuntu1
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.20.5ubuntu2
   apt  2.1.10ubuntu0.2
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.155.4+2.04-1ubuntu35.4 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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