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restart screen goes haywire when I restart on MacBook Air 2020 BigSur 11.4

Why does my screen go crazy and specifically distorted and pinkish in color when I restart from the logged out screen?

Posted on Jun 20, 2021 11:56 PM

Reply
Question marked as Top-ranking reply

Posted on Jun 21, 2021 5:33 AM

Go step by step and test.


1. Reset PRAM:  Reset NVRAM or PRAM on your Mac - Apple Support

     Settings that can be stored in NVRAM include sound volume, display resolution, startup-disk selection, time zone, 

     and recent kernel panic information. 

     The settings stored in NVRAM  depend on your Mac and the devices that you're using with your Mac.


2. Reset  SMC:   How to reset the SMC of your Mac - Apple Support   Choose the appropriate method.

    Quote:

    Resetting the system management controller (SMC) can resolve certain issues related to power, battery, fans,

    and other features.


3. Startup in Safe mode. https://support.apple.com/en-gb/HT201262 Choose the appropriate method.

    To leave Safe Mode, choose “Restart” at the bottom.

    Quote:

     Safe mode prevents your Mac from loading certain software when it starts up, including login items, 

     system extensions not required by macOS,

     and fonts not installed by macOS. It  also does a basic check of your startup disk, 

     similar to using First Aid in Disk Utility

     And it deletes some system caches, including font caches and the kernel cache, 

     which will be created again automatically as needed.


4. Contact Apple.

    If steps posted above do not help,

    Click inside the box to choose an option. contact Apple Support.

1 reply
Question marked as Top-ranking reply

Jun 21, 2021 5:33 AM in response to Btown88

Go step by step and test.


1. Reset PRAM:  Reset NVRAM or PRAM on your Mac - Apple Support

     Settings that can be stored in NVRAM include sound volume, display resolution, startup-disk selection, time zone, 

     and recent kernel panic information. 

     The settings stored in NVRAM  depend on your Mac and the devices that you're using with your Mac.


2. Reset  SMC:   How to reset the SMC of your Mac - Apple Support   Choose the appropriate method.

    Quote:

    Resetting the system management controller (SMC) can resolve certain issues related to power, battery, fans,

    and other features.


3. Startup in Safe mode. https://support.apple.com/en-gb/HT201262 Choose the appropriate method.

    To leave Safe Mode, choose “Restart” at the bottom.

    Quote:

     Safe mode prevents your Mac from loading certain software when it starts up, including login items, 

     system extensions not required by macOS,

     and fonts not installed by macOS. It  also does a basic check of your startup disk, 

     similar to using First Aid in Disk Utility

     And it deletes some system caches, including font caches and the kernel cache, 

     which will be created again automatically as needed.


4. Contact Apple.

    If steps posted above do not help,

    Click inside the box to choose an option. contact Apple Support.

restart screen goes haywire when I restart on MacBook Air 2020 BigSur 11.4

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