package libmpeg2encpp-2.1-0:amd64 1:2.1.0+debian-6build1 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration

[Lesly Augustin]

command sudo apt update just won't working, a dpkg was required in order to run it again.

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: libmpeg2encpp-2.1-0:amd64 1:2.1.0+debian-6build1
ProcVersionSignature: Ubuntu 5.11.0-34.36~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-34-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
CasperMD5CheckResult: skip
Date: Sun Sep 19 17:41:31 2021
ErrorMessage: package is in a very bad inconsistent state; you should reinstall it before attempting configuration
InstallationDate: Installed on 2021-09-13 (6 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
Python3Details: /usr/bin/python3.8, Python 3.8.10, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.6
SourcePackage: mjpegtools
Title: package libmpeg2encpp-2.1-0:amd64 1:2.1.0+debian-6build1 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration
UpgradeStatus: No upgrade log present (probably fresh install)

[Marc Deslauriers (mdeslaur)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.