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On a 13" retina display 2018 MacBook Air, once every 20 or so times, waking up from sleep by opening the cover I find the screen like this. Closing and opening the cover 3-4 times usually restores the screen to its correct state.
MacBook Air (2018 or later)
Go step by step and test.
1. Reset PRAM: http://support.apple.com/kb/PH14222
Some of the display settings are stored in PRAM.
2. Reset SMC. https://support.apple.com/en-us/HT201295
Choose the method for: “On Mac notebooks with non-removable battery”
3. Start up in Safe Mode. http://support.apple.com/kb/ph14204
To restart normally click the “Restart” button at the bottom.
If this does not help, contact Apple.
Genius Bar reservation:
http://www.apple.com/retail/geniusbar/
United States 1-800-275-2273
Go step by step and test.
1. Reset PRAM: http://support.apple.com/kb/PH14222
Some of the display settings are stored in PRAM.
2. Reset SMC. https://support.apple.com/en-us/HT201295
Choose the method for: “On Mac notebooks with non-removable battery”
3. Start up in Safe Mode. http://support.apple.com/kb/ph14204
To restart normally click the “Restart” button at the bottom.
If this does not help, contact Apple.
Genius Bar reservation:
http://www.apple.com/retail/geniusbar/
United States 1-800-275-2273
screen garbled after waking up by opening cover
