After I installed some updates and restarted my device, the advanced power monitor stopped showing the battery level (percentage) and the icon is stuck to showing empty. Tapping on it I get APM "disconnected"... taping again on that starts "connecting" and stays like that forever.
The "charging" banner doesn't appear when I plug the device nor does the icon animate as it charges and the "disconnected" banner does not appear when I unplug it...
I uninstaled and re-installed APM with no improvement...
I got that too. You must have installed the version that came from either "extras-testing" or "extras-devel" as this showed up as a Software Update a few days ago.
I simply uninstalled it, then disabled "extras-testing" and "extras-devel" for the meantime while I reinstalled the version from "extras".