Public bug reported: I was upgrading from 15.10 to 16.04 when this error occur.
ProblemType: Package DistroRelease: Ubuntu 16.04 Package: systemd 229-4ubuntu4 ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6 Uname: Linux 4.4.0-18-generic x86_64 ApportVersion: 2.20.1-0ubuntu1 Architecture: amd64 Date: Wed Apr 13 21:41:53 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 2016-01-08 (96 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) Lsusb: Bus 002 Device 002: ID 0781:5583 SanDisk Corp. Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 04f2:b483 Chicony Electronics Co., Ltd Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: ASUSTeK COMPUTER INC. X455LJ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-18-generic root=UUID=70fa96eb-e0d8-4e65-b049-9cb150759b40 ro quiet splash vt.handoff=7 RelatedPackageVersions: dpkg 1.18.4ubuntu1 apt 1.2.10 SourcePackage: systemd SystemdDelta: [EXTENDED] /etc/systemd/system/display-manager.service → /lib/systemd/system/display-manager.service.d/xdiagnose.conf [EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf [EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.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 2016-04-13 (0 days ago) dmi.bios.date: 04/22/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: X455LJ.203 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: X455LJ dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: ATN12345678901234567 dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX455LJ.203:bd04/22/2015:svnASUSTeKCOMPUTERINC.:pnX455LJ:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX455LJ:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.name: X455LJ dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. ** Affects: systemd (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-package xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1570310 Title: package systemd 229-4ubuntu4 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1570310/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs