I have an application that collects time exposure images from a USB camera unattended for up to 8 hours on my MB Pro Retina. I have to run on battery power. I try to set power management so that the screen goes off but everything else keeps alive. I don't want it to go back to the Mac lock screen. I set Windows 8.1 to never sleep but I continue to have the computer sleep at various points, the lock screen comes up, and the image collection is interrupted. What other settings on the Mac side do I need to try?
