package shim-signed 1.21.3+0.9+1465500757.14a5905.is.0.8-0ubuntu3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Brian Rheaume]

Issue was observed after returning from sleep mode.

ProblemType: Package
DistroRelease: Ubuntu 16.10
Package: shim-signed 1.21.3+0.9+1465500757.14a5905.is.0.8-0ubuntu3
ProcVersionSignature: Ubuntu 4.8.0-30.32-generic 4.8.6
Uname: Linux 4.8.0-30-generic x86_64
ApportVersion: 2.20.3-0ubuntu8
AptOrdering:
 shim:amd64: Install
 shim-signed:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
BootEFIContents:
 fw
 fwupx64.efi
Date: Wed Dec 7 12:58:30 2016
Df:
 Filesystem 1K-blocks Used Available Use% Mounted on
 /dev/sda6 213173512 5422964 196898864 3% /
 /dev/sdb1 244138880 1571488 242567392 1% /cdrom
 udev 1949496 0 1949496 0% /dev
 tmpfs 393104 6228 386876 2% /run
EFIBootMgr: Error: command ['efibootmgr', '-v'] failed with exit code 2: efibootmgr: EFI variables are not supported on this system.
ErrorMessage: subprocess installed post-installation script returned error exit status 1
RelatedPackageVersions:
 dpkg 1.18.10ubuntu1
 apt 1.3.1
SourcePackage: shim-signed
Title: package shim-signed 1.21.3+0.9+1465500757.14a5905.is.0.8-0ubuntu3 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)]

Your bug report shows that your system is not running in EFI mode. Why are you trying to install shim-signed on this system?

[Launchpad Janitor (janitor)]

[Expired for shim-signed (Ubuntu) because there has been no activity for 60 days.]