Asus PRO50G series laptop. Seems to be the same problem as in 8.10 that's been mentioned here before. The power management menu has no 'battery' tab, only AC power and General, and on shutdown it hangs right at the end and doesn't finish shutting down (but at least there's no visual artefacts).

The ball still in Asus's court for this? Anyone got word on a reliable fix?