package grub-efi-amd64-signed 1.142.4+2.04-1ubuntu26.2 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255

[Amir Houshang Pezeshkpour]

root@ava:~# apt autoremove
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 52 not upgraded.
root@ava:~# apt update && apt upgrade -y
Ign:1 http://ppa.launchpad.net/ansible/ansible/ubuntu focal InRelease
Hit:2 http://de.archive.ubuntu.com/ubuntu focal InRelease
Hit:3 http://ppa.launchpad.net/nm-l2tp/network-manager-l2tp/ubuntu focal InRelease
Err:4 http://ppa.launchpad.net/ansible/ansible/ubuntu focal Release
  404 Not Found [IP: 91.189.95.83 80]
Err:2 http://de.archive.ubuntu.com/ubuntu focal InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
Get:5 http://de.archive.ubuntu.com/ubuntu focal-updates InRelease [111 kB]
Err:3 http://ppa.launchpad.net/nm-l2tp/network-manager-l2tp/ubuntu focal InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 80B70870665AB177
Get:6 http://de.archive.ubuntu.com/ubuntu focal-backports InRelease [98.3 kB]
Err:5 http://de.archive.ubuntu.com/ubuntu focal-updates InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
Get:7 http://de.archive.ubuntu.com/ubuntu focal-security InRelease [107 kB]
Err:6 http://de.archive.ubuntu.com/ubuntu focal-backports InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
Err:7 http://de.archive.ubuntu.com/ubuntu focal-security InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/ansible/ansible/ubuntu focal Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://de.archive.ubuntu.com/ubuntu focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ppa.launchpad.net/nm-l2tp/network-manager-l2tp/ubuntu focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 80B70870665AB177
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://de.archive.ubuntu.com/ubuntu focal-updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://de.archive.ubuntu.com/ubuntu focal-backports InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://de.archive.ubuntu.com/ubuntu focal-security InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3B4FE6ACC0B21F32 NO_PUBKEY 871920D1991BC93C

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: grub-efi-amd64-signed 1.142.4+2.04-1ubuntu26.2
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: pass
Date: Sat Aug 8 09:13:51 2020
ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255
InstallationDate: Installed on 2020-07-16 (23 days ago)
InstallationMedia: Ubuntu-Server 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.1
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.142.4+2.04-1ubuntu26.2 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255
UpgradeStatus: No upgrade log present (probably fresh install)

[Seth Arnold (seth-arnold)]

You may have hardware errors, I suggest running:

sudo fwupdmgr update

to try to upgrade your bios. Hopefully the errors have been fixed.

Thanks