package systemd 229-4ubuntu4 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 2 -- report it anyway

[Craig Denman]

Problem surfaces during "do-release-upgrade" from 15.10 to 16.04. Upgrade process halts and I had to manually "sudo apt-get -f install" followed by several "sudo apt-get update" and "upgrade" and "dist-upgrades" to end up completing the upgrade. This error remains.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu4
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
NonfreeKernelModules: nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Thu Apr 21 20:36:40 2016
DpkgTerminalLog:
 Preparing to unpack .../systemd_229-4ubuntu4_amd64.deb ...
 De-configuring udev (225-1ubuntu9.1) ...
 dpkg: error processing archive /var/cache/apt/archives/systemd_229-4ubuntu4_amd64.deb (--unpack):
  subprocess installed pre-removal script returned error exit status 2
DuplicateSignature:
 De-configuring udev (225-1ubuntu9.1) ...
 dpkg: error processing archive /var/cache/apt/archives/systemd_229-4ubuntu4_amd64.deb (--unpack):
  subprocess installed pre-removal script returned error exit status 2
ErrorMessage: subprocess installed pre-removal script returned error exit status 2
InstallationDate: Installed on 2015-07-19 (277 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: Acer Aspire VN7-591G
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic.efi.signed root=UUID=a9472da9-2f8d-484c-8d7e-cc2fb2b2feae ro splash vt.handoff=7
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.10ubuntu1
SourcePackage: systemd
SystemdDelta:
 [EXTENDED] /etc/systemd/system/display-manager.service → /lib/systemd/system/display-manager.service.d/xdiagnose.conf
 [EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
 [EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf

 3 overridden configuration files found.
Title: package systemd 229-4ubuntu4 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 2
UpgradeStatus: Upgraded to xenial on 2016-04-22 (0 days ago)
dmi.bios.date: 08/06/2015
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.15
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Aspire VN7-591G
dmi.board.vendor: Acer
dmi.board.version: V1.15
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.15
dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.15:bd08/06/2015:svnAcer:pnAspireVN7-591G:pvrV1.15:rvnAcer:rnAspireVN7-591G:rvrV1.15:cvnAcer:ct10:cvrV1.15:
dmi.product.name: Aspire VN7-591G
dmi.product.version: V1.15
dmi.sys.vendor: Acer

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1570310, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.