package shim-signed 1.28~16.04.1+0.9+1474479173.6c180c6-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[sunil kumar]

nothing more to add

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: shim-signed 1.28~16.04.1+0.9+1474479173.6c180c6-1ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-79.100-generic 4.4.67
Uname: Linux 4.4.0-79-generic x86_64
.proc.sys.kernel.moksbstate_disabled: 0
.sys.firmware.efi.efivars.MokSBStateRT-605dab50-e046-4300-abb6-3dd810dd8b23: 

[Brian Murray (brian-murray)]

It looks like you are using an older version of gnome-software to update your system and the version of gnome-software you have installed does not include the fix for bug 1679435. Please update your system using the terminal and the command 'sudo apt-get dist-upgrade'.

Jun 19 21:13:00 hostname org.debian.apt[924]: 21:13:00 AptDaemon [INFO]: Initializing daemon
Jun 19 21:13:01 hostname org.debian.apt[924]: /usr/lib/python3/dist-packages/aptdaemon/worker/pkworker.py:35: PyGIWarning: PackageKitGlib was imported without specifying a version first. Use gi.require_version('PackageKitGlib', '1.0') before import to ensure that the right version gets loaded.
Jun 19 21:13:01 hostname org.debian.apt[924]: from gi.repository import PackageKitGlib as pk
Jun 19 21:13:01 hostname org.debian.apt[924]: 21:13:01 AptDaemon.PackageKit [INFO]: Initializing PackageKit compat layer