@CaseySJ Yes, I'm usinga Fenvi-T919. It was working fine until last couple days where I can't wake the Hack using BT keyboard or mouse. And, if I wake it up manually, the mouse and keyboard aren't registering. Both KB and mouse (Magic Mouse) are Apple branded BT devices. Screen shots are below. Really appreciate your help with this...
EDIT: if I connect a USB KB and mouse, I can log in obviously. But it takes a little time before BT wakes up in the prefpane, and, once that happens, then the BT devices all work. So, definitely a wake from sleep problem.