Black screen with white apple and 20 white vertical bars on wake-up

Question

MacBook Pro 15" Unibody Mid 2012

2012년 6월 출시 / Core i7 프로세서 Turbo Boost 포함 / 최대 1 GB DDR5 비디오 RAM

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metalarts @metalarts

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게시일: 2019년 11월 9일

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Black screen with white apple and 20 white vertical bars on wake-up

Hi ~ After my mid-2012 MacBook Pro is woke up after being unused for about a half a day or so, it shows a black screen with the regular white apple, plus a row of about 20 rounded white bars below. This stays on for about 20 seconds, then all works fine after that.

What does this indicate, please?

Thanks much in advance!

Sure, Dan. Thank you

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Can you post a picture or short video so we can see what you are seeing 기존 질문에 이미지 추가하기

Dan 의 2019년 11월 10일

Well, that's a lot different than what I expected!

It appears the startup bar is broken into segments! Instead of a smooth bar as the different phases of the boot up process completes.

Here's what we expect on boot up About the screens on your Mac as it starts up

Which 2012 model do you have the older unibody or the newer retina version?

Dan 의 2019년 11월 10일

It calls itself "MacBook Pro (15-inch, Mid 2012)." It's the older, non-retina model. This only happens when I'm awakening it from sleep, not when doing a full reboot.

Yesterday I zapped the PRAM, as I've heard that may help. So far, so good...

metalarts 의 2019년 11월 10일

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Can you post a picture or short video so we can see what you are seeing 기존 질문에 이미지 추가하기 — Dan
Well, that's a lot different than what I expected!

It appears the startup bar is broken into segments! Instead of a smooth bar as the different phases of the boot up process completes.

Here's what we expect on boot up About the screens on your Mac as it starts up

Which 2012 model do you have the older unibody or the newer retina version? — Dan
It calls itself "MacBook Pro (15-inch, Mid 2012)." It's the older, non-retina model. This only happens when I'm awakening it from sleep, not when doing a full reboot.

Yesterday I zapped the PRAM, as I've heard that may help. So far, so good... — metalarts