Public bug reported: I am a newbie at this, so all I can give you is the report that popped up:
crash-report Package:shim-signed 1.18 ~16.04.1 +0.8-Oubuntu2 ... ProblemType: Package DistroRelease: Ubuntu 16.04 Package: shim-signed (not installed) ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13 Uname: Linux 4.4.0-31-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 Date: Mon Aug 1 21:53:26 2016 ErrorMessage: subprocess installed post-installation script returned error exit status 1 RelatedPackageVersions: dpkg 1.18.4ubuntu1.1 apt 1.2.12~ubuntu16.04.1 SourcePackage: shim-signed Title: package shim-signed (not installed) failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: shim-signed (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/1608759 Title: package shim-signed (not installed) 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/shim-signed/+bug/1608759/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs