[Bug 1868198] Re: package grub-efi-amd64-signed 1.128.2+2.04-1ubuntu12.2 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[Chris Guiver]

Thank you for taking the time to report this issue and helping to make
Ubuntu better.

In the 'dpkg-terminal-log' output I notice

grub-install: error: cannot open `/boot/efi/EFI/ubuntu/grubx64.efi':
Read-only file system.

In your 'dmesg' output are many errors on a FS that caused the RO trip,
ie.

[   93.081833] FAT-fs (sda2): error, corrupted directory (invalid entries)
[   93.081837] FAT-fs (sda2): Filesystem has been set read-only
[   93.082972] FAT-fs (sda2): error, corrupted directory (invalid entries)
[   93.087589] FAT-fs (sda2): error, corrupted directory (invalid entries)
[   93.095266] FAT-fs (sda2): error, corrupted directory (invalid entries)

[ 4309.733625] FAT-fs (sda2): error, fat_get_cluster: invalid cluster chain (i_pos 0)
[ 4309.733654] FAT-fs (sda2): error, fat_get_cluster: invalid cluster chain (i_pos 0)
[ 4309.734815] FAT-fs (sda2): error, fat_get_cluster: invalid cluster chain (i_pos 0)
[ 4309.734832] FAT-fs (sda2): error, fat_get_cluster: invalid cluster chain (i_pos 0)
[ 4309.739088] FAT-fs (sda2): error, fat_get_cluster: invalid cluster chain (i_pos 0)
[ 4309.739111] FAT-fs (sda2): error, fat_get_cluster: invalid cluster chain (i_pos 0)
[ 4309.746569] FAT-fs (sda2): error, fat_get_cluster: invalid cluster chain (i_pos 0)
[ 4309.746601] FAT-fs (sda2): error, fat_get_cluster: invalid cluster chain (i_pos 0)

I suspect your issue isn't bug related, but you've an EFI partition that
likely needs a `fsck` to correct file system errors, thus support would
be more appropriate, eg. https://answers.launchpad.net/ubuntu . You can
also find help with your problem in the support forum of your local
Ubuntu community http://loco.ubuntu.com/ or asking at
https://askubuntu.com or https://ubuntuforums.org , or for more support
options please look at https://discourse.ubuntu.com/t/community-
support/709

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https://bugs.launchpad.net/bugs/1868198

Title:
  package grub-efi-amd64-signed 1.128.2+2.04-1ubuntu12.2 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:
  ubuntu 19.10
  this happened a minute or two after installing updates and about 10 seconds after changing my wallpaper. Not sure if that's helpful

  ProblemType: Package
  DistroRelease: Ubuntu 19.10
  Package: grub-efi-amd64-signed 1.128.2+2.04-1ubuntu12.2
  ProcVersionSignature: Ubuntu 5.3.0-40.32-generic 5.3.18
  Uname: Linux 5.3.0-40-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu8.6
  Architecture: amd64
  Date: Thu Mar 19 22:58:26 2020
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2020-03-03 (17 days ago)
  InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  Python3Details: /usr/bin/python3.7, Python 3.7.5, python3-minimal, 3.7.5-1
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu2
   apt  1.9.4
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.128.2+2.04-1ubuntu12.2 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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