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MacBook Pro 15" Unibody Mid 2012 Disable 2nd GPU to prevent white screen or green stripes during boot process.

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  1. MacBook Pro 15" Unibody Mid 2012 Disable 2nd GPU to prevent white screen or green stripes during boot process., MacBook Pro 15" Unibody Mid 2012 Disable 2nd GPU to prevent white screen or green stripes during boot process.: stap 1, afbeelding 1 van 1

    • 1) Boot Macbook with keys pressed: Command (plus) S

    • 2) Wait for active command line

    • 3) Enter these 3 commands:

    • nvram fa4ce28d-b62f-4c99-9cc3-6815686e30f9:gpu-power-prefs=%01%00%00%00

    • nvram boot-args="-v"

    • reboot

    • System should boot without issues.

    • Source: https://forums.macrumors.com/threads/for...

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Cherry

Lid sinds: 01/01/16

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After nearly 2 weeks internet research, at last a working solution. Heureka! Thanx a lot!

Best regards,

Chris

Christian Gelbke - Antwoord

keep getting:

Process[207] crashed: opendirecteroyd. Too many corpses being created.

Process[208] crashed: opendirecteroyd. Too many corpses being created.

Process[209] crashed: opendirecteroyd. Too many corpses being created.

etc.

mrtjaet - Antwoord

This post worked !!!! Thank you so much. I joined IFIXit because of this post.

Ganesh Gupta - Antwoord

Hello, I have a similar problem with my MacBook pro Early 2011. Do you think, that I can use the same 3 commands?

Sandro - Antwoord

Key phrase: Boot. I can’t boot my machine. I’m stuck on the white screen of death. It sometimes is pink and other times the external monitor is green. I did all the resets on the Apple side (to PRAM, SMC, etc.), I tried to restore the OS (didn’t work) and I tried to use a different computer to create a working boot drive (USB) and can’t seem to get the command correct for Sierra or High Sierra. The USB Boot I created with Mojave on it could be seen in the Repair boot process but the machine simply shut down mid processing. So I can’t do the entry of the code because I can’t boot or find a terminal or be in verbose mode to do so. My 2011 15” Macbook Pro is running Sierra (was) and I have data on it I very much need - in addition to wanting to see my screens again.

Christne Taylor - Antwoord

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