No notifications or action on low battery or battery critical since upgrade

[Pablo180]

During the upgrade to 16.10 it seems that the installer disabled my low battery notifications and actions. However after installation was complete it didn't re-enable them. Now I no longer get notifications nor is any action taken on the thresholds set in DConf.

Things I have tried:

 - Reinstalling gnome-power-manager
 - Reinstalling indicator-power
 - Reinstalling libnotify-bin notify-osd
 - Checked and altered settings in DConf - they're all still there, just seem to be ignored.

None of this worked. I'm obviously quite worried as don't know what will happen if I leave my laptop to run down the battery.

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: gnome-power-manager 3.22.0-1ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-22.24-generic 4.8.0
Uname: Linux 4.8.0-22-generic x86_64
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Oct 16 13:45:43 2016
InstallationDate: Installed on 2015-02-23 (600 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
SourcePackage: gnome-power-manager
UpgradeStatus: Upgraded to yakkety on 2016-10-13 (2 days ago)

[Pablo180 (paultait22)]

I downloaded and installed and tested many mainline kernels, right up to and including 4.9.0 rc2. None of these fixed the issue. Nor it seems is any action taken, I've gone right down to 6% without the OS taking any action.