Public bug reported: I noticed after a reboot that this was an issue for some reason after the system tried to upgrade apport:
Start-Date: 2018-01-05 07:44:52 Commandline: /usr/bin/unattended-upgrade Upgrade: apport:amd64 (2.20.1-0ubuntu2.14, 2.20.1-0ubuntu2.15), python3-apport:amd64 (2.20.1-0ubuntu2.14, 2.20.1-0ubuntu2.15), apport-gtk:amd64 (2.20.1-0ubuntu2.14, 2.20.1-0ubuntu2.15), python3-problem-report:amd64 (2.20.1-0ubuntu2.14, 2.20.1-0ubuntu2.15) Error: Sub-process /usr/bin/dpkg returned an error code (1) End-Date: 2018-01-05 07:45:10 I fixed it with: apt-get dist-upgrade -f ProblemType: Package DistroRelease: Ubuntu 16.04 Package: apport 2.20.1-0ubuntu2.15 Uname: Linux 4.14.8-041408-generic x86_64 ApportLog: ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 CrashReports: 600:0:116:145106:2018-01-05 07:45:09.131217479 +0000:2018-01-05 07:45:10.131217479 +0000:/var/crash/apport.0.crash Date: Fri Jan 5 07:45:10 2018 DuplicateSignature: package:apport:2.20.1-0ubuntu2.15 Setting up apport (2.20.1-0ubuntu2.15) ... Segmentation fault dpkg: error processing package apport (--configure): subprocess installed post-installation script returned error exit status 239 ErrorMessage: subprocess installed post-installation script returned error exit status 239 InstallationDate: Installed on 2017-05-29 (220 days ago) InstallationMedia: Xubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215) PackageArchitecture: all RelatedPackageVersions: dpkg 1.18.4ubuntu1.3 apt 1.2.24 SourcePackage: apport Title: package apport 2.20.1-0ubuntu2.15 failed to install/upgrade: subprocess installed post-installation script returned error exit status 239 UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: apport (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/1741416 Title: package apport 2.20.1-0ubuntu2.15 failed to install/upgrade: subprocess installed post-installation script returned error exit status 239 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1741416/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs