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Re: debian-user-digest Digest V2017 #186

I have a MacBook Pro, Jessie dual-boot. The display will work fine if I
close the lid to put it to sleep and then open the lid. No problems
there. However, when I connect an external display I have problems with
waking up the laptop screen. Here's the scenario:

1. Connect external display as secondary display
2. Close lid
3. Open lid - neither the laptop screen or external display will wake up
4. Unplug/replug the external display -- now the external display wakes
up but the laptop screen remains asleep.

If I make the external display the primary screen, it will wake up when I open the lid, but the laptop screen still remains asleep.

With the external display connected how can I make the laptop screen wake up in this scenario?