Video issue with MacBook Pro 16" 2021 (M1 Pro)

[hajime]

Hi, I was recalibrating the battery of a MacBook Pro 16" 2021 (M1 Pro). After waiting for 5 hours, at Step. 5, I reconnected the charger to the laptop. When the laptop was waking up, I saw lots of random strange colourful patterns (mostly squares) for 2-3 seconds. Then, it resumed to normal. Do I need to worry that the laptop might have a defective chip? I calibrated the battery of new MacBook Pro over the past 20 years but never seen such problem.

How to Calibrate Your MacBook's Battery for Better Performance

Apple MacBooks include a smart battery to manage the charge and discharge cycles. Calibrating the battery results in better battery performance.

www.lifewire.com

Anybody else has this problem?

 

[CMMChris]

It is normal, don't worry about it. Lots of people had this happening already when they calibrated their batteries.

 

[hajime]

It is normal, don't worry about it. Lots of people had this happening already when they calibrated their batteries.

What is the cause of this? Is it just for M1 MacBook Pro? Certainly this did not happen to my 2019 and previous models.

 

[CMMChris]

Yes just M1, don't know what the cause is but since it's common, it is not a defect.

 

[hajime]

I asked Apple the cause and they have no idea!

 

[CMMChris]

They never have any idea about anything ?

 

[hajime]

I tried the same procedure. Again, when I plugged the power adapter to the computer, garbage showed up on the screen. Then, the entire screen kept fleshing in pink.