Reassigning to gnome-software, which should take care to not let the debconf frontend die while dpkg is still running.
** Package changed: shim-signed (Ubuntu) => gnome-software (Ubuntu) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-software in Ubuntu. https://bugs.launchpad.net/bugs/1737772 Title: package shim-signed 1.32~16.04.1+0.9+1474479173.6c180c6-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 Status in gnome-software package in Ubuntu: New Bug description: VM Box installation could not be finished ProblemType: Package DistroRelease: Ubuntu 16.04 Package: shim-signed 1.32~16.04.1+0.9+1474479173.6c180c6-1ubuntu1 ProcVersionSignature: Ubuntu 4.10.0-40.44~16.04.1-generic 4.10.17 Uname: Linux 4.10.0-40-generic x86_64 .proc.sys.kernel.moksbstate_disabled: 0 ApportVersion: 2.20.1-0ubuntu2.14 Architecture: amd64 Date: Tue Dec 12 15:32:38 2017 EFITables: Dez 12 10:55:40 udo-All-Series kernel: efi: EFI v2.40 by American Megatrends Dez 12 10:55:40 udo-All-Series kernel: efi: ESRT=0x9779e118 ACPI=0x964fc000 ACPI 2.0=0x964fc000 SMBIOS=0xf05b0 MPS=0xfd610 Dez 12 10:55:40 udo-All-Series kernel: esrt: Reserving ESRT space from 0x000000009779e118 to 0x000000009779e150. Dez 12 10:55:40 udo-All-Series kernel: Secure boot enabled ErrorMessage: subprocess installed post-installation script returned error exit status 1 InstallationDate: Installed on 2017-11-17 (24 days ago) InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801) RelatedPackageVersions: dpkg 1.18.4ubuntu1.3 apt 1.2.24 SecureBoot: 6 0 0 0 1 SourcePackage: shim-signed Title: package shim-signed 1.32~16.04.1+0.9+1474479173.6c180c6-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1737772/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

