Fix: The Macbook must have overheated when I was doing the Lion update. I thought it was because of the Lion update.
I had a disc in so I would hear it spinning.
#Mac desktop screen dark after sleep update#
But now the only way to consistently fix the issue is to restart the MacBook. After a Lion update I would push the power button and get a solid white light (from the sleep light), black screen and there would be no chime.
It used to be that when this happens, I manually put the MacBook to sleep and wake it up again, and voila, it would detect the external display again. I use the MacBook at home as well as at work I've tried different ports on my computer, different cables, and different monitors the issue is with the MacBook itself. I'm using a Mini DisplayPort to DisplayPort cable. I come back, and no matter what I try, the only way for the MacBook to detect the external display again is to restart the computer! Hold down the Shift + Control + Option and Power keys at. On modern Macbooks, you can reset both SMC & NVRAM with the following steps: Turn off your Mac and disconnect the power cable. Here's my situation: I have an external monitor hooked up to to the MacBook's display port, I walk away from my computer for a few minutes and it goes to sleep. If you constantly face this issue and your Mac’s screen stays black after waking from sleep, consider resetting the NVRAM and the System Management Controller. ( Update: Now running macOS Mojave 10.14.5 on a 13-inch 2018 model, and this is still a very annoying issue). I HAVE NOT tested these programs, so Caveat Emptor. See this SITE for an example of a program which will do it. There are ways to do what you want, but not officially. I have a MacBook Pro (Retina, 13-inch, Early 2015, macOS High Sierra 10.13.6) which fails to detect an external display after is has woken up from sleep. The only way to come close is to go to the power settings, set the screen to turn off after 1 minute, and set the Sleep time to Never.
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