Public bug reported:
This happened after the laptop crashed suddenly. and then i gave boot
eoor "Kernel panick error: VFS not in sync" something like that. Then I
had to use another kernel from ubuntu recovey mode under advanced
options and perform the following to get back into ubunut.
below is the prompt and command I used
(initramfs) fsck /dev/sda6
after running above command it fixed the problem and after getting into the
system, I got this current error in grub2-signed package
ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: grub-efi-amd64-signed 1.139+2.04-1ubuntu24
ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
Uname: Linux 5.4.0-18-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu26
Architecture: amd64
CasperMD5CheckResult: skip
Date: Fri Apr 10 11:26:38 2020
ErrorMessage: installed grub-efi-amd64-signed package post-installation script
subprocess returned error exit status 2
InstallationDate: Installed on 2020-04-09 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200330)
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal,
3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
dpkg 1.19.7ubuntu3
apt 2.0.1ubuntu1
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.139+2.04-1ubuntu24 failed to
install/upgrade: installed grub-efi-amd64-signed package post-installation
script subprocess returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: grub2-signed (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-package focal
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https://bugs.launchpad.net/bugs/1872010
Title:
package grub-efi-amd64-signed 1.139+2.04-1ubuntu24 failed to
install/upgrade: installed grub-efi-amd64-signed package post-
installation script subprocess returned error exit status 2
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