I thought I had set my machine such that it would shutdown when the power was critically low on battery. In org.gnome.settings-daemon.plugins.power, I have set use-time-for-policy to false (i.e. no tick in the box) percentage-critical to 4, percentage-action to 3, critical-battery-action to 'shutdown'.
Indeed when running under 16.04LTS, it does warn when low and warn when critical and it does shutdown at the threshold. The machine then restarts, i.e it behaves as if it had received the command 'reboot' not 'shutdown'. That isn't what I want.
Has anyone else experienced this? If so, can they please tell me how to fix it?