This never happened to me before. I think this is not a critical problem or something, but it bothers me every time I open up my laptop (sleep mode). The resolution doesn't fit my screen and leave a black area. The login screen is fine if I boot up the laptop, but this sometimes happens when I open my laptop from sleep mode.Does anyone know how to fix this? I hope Apple will fix this in the next macOS update.
MacBook Pro, macOS Sierra (10.12.3), 13-inch, Mid 2012
Go step by step and test.
1. Start up in Safe Mode. https://support.apple.com/kb/PH21875?locale=en_US
2. Repair Disk. https://support.apple.com/kb/PH22243?locale=en_US
3. Reset NVRAM/PRAM. http://support.apple.com/kb/PH18761
4. Reset SMC. Choose the method for “On Mac notebooks with non-removable battery”.
Go step by step and test.
1. Start up in Safe Mode. https://support.apple.com/kb/PH21875?locale=en_US
2. Repair Disk. https://support.apple.com/kb/PH22243?locale=en_US
3. Reset NVRAM/PRAM. http://support.apple.com/kb/PH18761
4. Reset SMC. Choose the method for “On Mac notebooks with non-removable battery”.
Weird Mac login screen display
