systemd-shim is a xenial package. Your distro information is bionic. Am I right to assume that this happened while you were trying to upgrade a xenial system to bionic? I have to admit I just ran into this myself.
** Changed in: systemd-shim (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of DX Packages, which is subscribed to systemd-shim in Ubuntu. https://bugs.launchpad.net/bugs/1807514 Title: installed systemd-shim package post-removal script subprocess returned error exit status 2 Status in systemd-shim package in Ubuntu: Incomplete Bug description: installed systemd-shim package post-removal script subprocess returned error exit status 2 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xorg 1:7.7+19ubuntu7.1 ProcVersionSignature: Ubuntu 4.15.0-42.45-generic 4.15.18 Uname: Linux 4.15.0-42-generic i686 .tmp.unity_support_test.0: ApportVersion: 2.20.9-0ubuntu7.5 Architecture: i386 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Sat Dec 8 17:13:53 2018 DistUpgraded: 2018-12-08 17:07:42,953 DEBUG /openCache(), new cache size 61306 DistroCodename: bionic DistroVariant: ubuntu ExtraDebuggingInterest: I just need to know a workaround GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series] [1002:68f9] (prog-if 00 [VGA controller]) Subsystem: XFX Pine Group Inc. Cedar [Radeon HD 5000/6000/7350/8350 Series] [1682:3030] InstallationDate: Installed on 2014-02-15 (1757 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release i386 (20131016.1) MachineType: Dell Inc. Dell DXP051 ProcEnviron: LANGUAGE=en_GB:en PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-42-generic root=UUID=e3337e9d-4116-4f99-b96f-8019182e5c07 ro Renderer: Software SourcePackage: xorg UpgradeStatus: Upgraded to bionic on 2018-12-08 (0 days ago) dmi.bios.date: 01/08/2007 dmi.bios.vendor: Dell Inc. dmi.bios.version: A07 dmi.board.name: 0YC523 dmi.board.vendor: Dell Inc. dmi.chassis.type: 7 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA07:bd01/08/2007:svnDellInc.:pnDellDXP051:pvr:rvnDellInc.:rn0YC523:rvr:cvnDellInc.:ct7:cvr: dmi.product.name: Dell DXP051 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1 version.libdrm2: libdrm2 2.4.91-2 version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1 version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2 xserver.bootTime: Sun Nov 4 10:33:25 2018 xserver.configfile: default xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.19.6-1ubuntu4.2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd-shim/+bug/1807514/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp