[Bug 1790994] Re: package grub-efi-amd64-signed 1.93.5+2.02-2ubuntu8.4 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[Ying]

Some more information when trying to fix this.

sudo dpkg --configure -a
Setting up grub-efi-amd64-signed (1.93.5+2.02-2ubuntu8.4) ...
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.
dpkg: error processing package grub-efi-amd64-signed (--configure):
 installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
dpkg: dependency problems prevent configuration of shim-signed:
 shim-signed depends on grub-efi-amd64-signed; however:
  Package grub-efi-amd64-signed is not configured yet.

dpkg: error processing package shim-signed (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 grub-efi-amd64-signed
 shim-signed

But /boot has space.
df -h | grep boot
/dev/sda1       511M  4.7M  507M   1% /boot/efi

Looking at similar problems (https://bugs.launchpad.net/ubuntu/+source
/shim-signed/+bug/1776271) could need a BIOS update. Currently

sudo lshw | less
  *-core
       description: Motherboard
       product: 2B47
       vendor: HP
       physical id: 0
       version: 1.04
     *-firmware
          description: BIOS
          vendor: AMI
          physical id: 0
          version: A0.13
          date: 12/21/2015
          size: 64KiB
          capacity: 8128KiB

Have not yet rebooted after the upgrade, but in case reboot fails, I
will report back on a different computer.

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https://bugs.launchpad.net/bugs/1790994

Title:
  package grub-efi-amd64-signed 1.93.5+2.02-2ubuntu8.4 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 just tried to update

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: grub-efi-amd64-signed 1.93.5+2.02-2ubuntu8.4
  ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
  Uname: Linux 4.15.0-23-generic x86_64
  NonfreeKernelModules: kpatch_livepatch_Ubuntu_4_15_0_23_25_generic_42
  ApportVersion: 2.20.9-0ubuntu7.2
  Architecture: amd64
  Date: Wed Sep  5 21:01:50 2018
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2016-05-05 (853 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3ubuntu1
  PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2
   apt  1.6.3ubuntu0.1
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.93.5+2.02-2ubuntu8.4 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  UpgradeStatus: Upgraded to bionic on 2018-05-03 (125 days ago)

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