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

[Sean]

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)

[Chris Guiver (guiverc)]

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

[Launchpad Janitor (janitor)]

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