https://bbs.archlinux.org – I have also encountered a similar issue since updating today; the KDE Battery Monitor widget shows an 'empty' battery symbol with a red 'x' over it, and also claims the 'AC Adapter' is 'Not Plugged In' (regardless of whether or not it actually is). The battery-related options in the powerdevil KCMs are also gone, with only the standard (i.e. (HowTos)