Mac Wake Up Screen Glitch

When I wake up my mac from sleep, the screen glitches and displays static, but it's only a flash (0.5 seconds). I've seen posts about this happening in macbook pro as well, after we've updated to High Sierra. I've seen examples about screens with weird colors, but in my case is just a greyish static. This lasts for only a few seconds.

MacBook Air, High Sierra Version 10.13.4

Posted on Apr 8, 2018 11:11 AM

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Posted on Aug 14, 2018 1:15 PM

What fixed this was resetting the PRAM or NVRAM by following these instructions.

Reset NVRAM or PRAM on your Mac - Apple Support


I had migrated my MacBook Air 13" to the new MacBookPro 15" and the screen was trying to be a MacBook Air.


Also, I had to search to figure out how to change the computer's name - it's under Sharing in System Preferences.

74 replies

Jan 5, 2019 10:06 AM in response to jackieg715

The static screen on start up has stopped on my 2017 12" Mac. But other problems such as inconsistent keys and static screen on the secondary monitor when on first start (have to reconnect HDMI for static to stop), has taken away the allure of the Mac. Hard to move away from Mac because of things like iMessage, mail, air drop and Numbers unique to Mac, but disappointed in Apple's failure to maintain basic functionality -- they can't say it just works. For work, I've had to use the pre-2018 MacBook Air, and it had the static screen on start.

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Mac Wake Up Screen Glitch

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