I'm having this issue - however unplugging the charging cable immediately updates the correct percentage. I'm running Ubuntu 16.04 LTS and I've put in some Unity tweaks, but this shouldn't matter.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to upower in Ubuntu. https://bugs.launchpad.net/bugs/1008050 Title: After resume from suspend, power-indicator is unaware of battery changes Status in indicator-power: Incomplete Status in indicator-power package in Ubuntu: Incomplete Status in upower package in Ubuntu: Confirmed Bug description: When resuming from suspend, power-indicator seems to be frozen. Remaining time is not updated, even if I (un)plug AC. Only way to restore normal operation without reboot is to start gnome- power-manager... the indicator becomes responsive again. Probably related to https://bugs.launchpad.net/indicator- power/+bug/983928 and/or https://bugs.launchpad.net/indicator- power/+bug/994745 To manage notifications about this bug go to: https://bugs.launchpad.net/indicator-power/+bug/1008050/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp