Public bug reported: This happened when running updates. There are similar bugs in the system, but none for this version of the package.
$ lsb_release -rd Description: Ubuntu 16.04.2 LTS Release: 16.04 I am presuming that the bug reporting thing has magically added the relevant details to this report. ProblemType: Package DistroRelease: Ubuntu 16.04 Package: grub-common 2.02~beta2-36ubuntu3.7 ProcVersionSignature: Ubuntu 4.4.0-62.83-generic 4.4.40 Uname: Linux 4.4.0-62-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 Date: Fri Feb 17 10:32:07 2017 ErrorMessage: subprocess installed post-installation script returned error exit status 1 InstallationDate: Installed on 2016-12-22 (56 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-62-generic.efi.signed root=UUID=51aed5d5-22a4-4f0d-a2b6-45d76c98d03b ro quiet splash vt.handoff=7 RelatedPackageVersions: dpkg 1.18.4ubuntu1.1 apt 1.2.19 SourcePackage: grub2 Title: package grub-common 2.02~beta2-36ubuntu3.7 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: grub2 (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/1665491 Title: package grub-common 2.02~beta2-36ubuntu3.7 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1665491/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs