gnome-software frontend can close while packages are still configuring, breaking debconf prompts (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)

[Udo Hoegemeier]

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)

[Steve Langasek (vorlon)]

Reassigning to gnome-software, which should take care to not let the debconf frontend die while dpkg is still running.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.