16.04, initial install, system is UEFI: package shim-signed 1.17~16.04.1+0.8-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Eric Bruce]

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ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: shim-signed 1.17~16.04.1+0.8-0ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-22.40-lowlatency 4.4.8
Uname: Linux 4.4.0-22-lowlatency x86_64
NonfreeKernelModules: btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ses enclosure hid_generic hid_logitech_hidpp hid_logitech_dj usbhid hid uas usb_storage amdkfd amd_iommu_v2 radeon i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops psmouse r8169 mii drm ahci libahci wmi video fjes
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
BootEFIContents:
 fw
 fwupx64.efi
Date: Fri Jul 15 22:10:16 2016
Df:
 Filesystem 1K-blocks Used Available Use% Mounted on
 /dev/sdb3 532910148 311422544 194394276 62% /
 /dev/sr1 2687520 2687520 0 100% /cdrom
 udev 3527092 0 3527092 0% /dev
 tmpfs 715008 9760 705248 2% /run
ErrorMessage: subprocess installed post-installation script returned error exit status 1
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.10ubuntu1
SourcePackage: shim-signed
Title: package shim-signed 1.17~16.04.1+0.8-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[Steve Langasek (vorlon)]

This bug report is missing the output from the shim-signed postinst script to explain why the package install failed. Marking as invalid.