Comment 0 for bug 1880541

During the Dist upgrade from 18.04 LTS to 20.04 LTS udev failed to configure interrupting the upgrade.

dpkg complained that kvm already exist but it is not a system group.

From what I saw my user was the only member of kvm group
I don't recall installing kvm manually but I do have Android emulator installed so it is possible that it is related.

Removing kvm user allowed dpkg --configure --all to succeed

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: udev 245.4-4ubuntu3
ProcVersionSignature: Ubuntu 4.15.0-101.102-generic 4.15.18
Uname: Linux 4.15.0-101-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CustomUdevRuleFiles: 56-hpmud.rules 70-snap.core.rules
Date: Mon May 25 11:01:36 2020
ErrorMessage: podproces zainstalowany pakiet udev skrypt post-installation zwrócił kod błędu 1
InstallationDate: Installed on 2017-10-18 (949 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-101-generic root=UUID=1c3374a5-d07b-4588-8159-7607318eb2c9 ro quiet splash vt.handoff=1
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: /usr/bin/python2.7, Python 2.7.18rc1, python-is-python2, 2.7.17-4
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.1
SourcePackage: systemd
Title: package udev 245.4-4ubuntu3 failed to install/upgrade: podproces zainstalowany pakiet udev skrypt post-installation zwrócił kod błędu 1
UpgradeStatus: Upgraded to focal on 2020-05-25 (0 days ago)
dmi.bios.date: 07/18/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P4.80
dmi.board.name: X370 Taichi
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP4.80:bd07/18/2018:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnX370Taichi:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To Be Filled By O.E.M.
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.