Macbook Pro - Lid Down, running on battery, secondary display no signal.
When I have the power adapter plugged in and close my macbook lid a quick touch on my usb keyboard wakes the computer up to output to the secondary display.
When I'm just running off the battery and close my lid I cannot wake the computer up to output to the secondary display (sharp 32in LCD)
Any way to defeat this in settings?
Kind of annoying if I need to do a presentation on battery mode with the lid closed.
Thanks in advance for any input.