[Bug 1774278] Re: package grub-efi-amd64-signed 1.93+2.02-2ubuntu8 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[Apport retracing service]

** Tags removed: need-duplicate-check

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to grub2-signed in Ubuntu.
https://bugs.launchpad.net/bugs/1774278

Title:
  package grub-efi-amd64-signed 1.93+2.02-2ubuntu8 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:
  New

Bug description:
  I installed lubuntu 64bit version on a baytrail tablet & the installation failed while installing grub. I've managed to boot with the broken installation using the live usb. Im trying to fix the booting process using bootrepair but I get is this error. 
  Creating config file /etc/default/grub with new version
  Installing for x86_64-efi platform.
  Could not prepare Boot variable: No space left on device
  grub-install: error: efibootmgr failed to register the boot entry: Input/output error.
  Failed: grub-install --target=x86_64-efi  
  WARNING: Bootloader is not properly installed, system may not be bootable
  Setting up linux-signed-generic (4.15.0.22.23) ...
  Setting up grub-efi-amd64-signed (1.93+2.02-2ubuntu8) ...
  grub-install: error: /usr/lib/grub/i386-pc/modinfo.sh doesn't exist. Please specify --target or --directory.
  dpkg: error processing package grub-efi-amd64-signed (--configure):
   installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  Processing triggers for linux-image-4.15.0-22-generic (4.15.0-22.24) ...
  /etc/kernel/postinst.d/initramfs-tools:
  update-initramfs: Generating /boot/initrd.img-4.15.0-22-generic
  Processing triggers for ureadahead (0.100.0-20) ...
  Processing triggers for shim-signed (1.34.9+13-0ubuntu2) ...
  Errors were encountered while processing:
   grub-efi-amd64-signed
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: grub-efi-amd64-signed 1.93+2.02-2ubuntu8
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  Date: Thu May 31 02:22:29 2018
  DuplicateSignature:
   package:grub-efi-amd64-signed:1.93+2.02-2ubuntu8
   Setting up grub-efi-amd64-signed (1.93+2.02-2ubuntu8) ...
   grub-install: error: /usr/lib/grub/i386-pc/modinfo.sh doesn't exist. Please specify --target or --directory.
   dpkg: error processing package grub-efi-amd64-signed (--configure):
    installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3
  PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2
   apt  1.6.1
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.93+2.02-2ubuntu8 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)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1774278/+subscriptions