@Jeremy: I've copied your devkit dumps to the uptream bug report, thanks a bunch. It'll probably be more useful to continue discussion there with the g-p-m developer, Richard Hughes.
@Toby: Interesting. I guess you have a different issue. You should probably file a different report against devicekit-power.
Thanks for the info, everyone.
@Jeremy: I've copied your devkit dumps to the uptream bug report, thanks a bunch. It'll probably be more useful to continue discussion there with the g-p-m developer, Richard Hughes.
@Toby: Interesting. I guess you have a different issue. You should probably file a different report against devicekit-power.