MBP 1,1-10,2 Force 2011 MacBook Pro 8,2 with failed AMD GPU to ALWAYS use Intel integrated GPU (EFI variable fix)

[mbp17forever]

Thanks for the reply.
I started last night installing that patched version of catalina. But then in the first reboot it goes to a black screen again.
So this morning I went and turned it on:

It turns on and kept trying to conclude the installation. But after that when it goes for another reboot:

It goes into the problematic behaviour of black screen, sleep light on, fans on, but no chime and no progress.
Funny thing is if I wait another 20 minutes or so, I can have another chance of it turning on and behaving "normally".

I´m not even sure if this is the gpu problem. Tried changing the ram from 16gb to the original 4gb but the same behaviour is present. Did an apple hardware test and showed no problems..

what about your hard drive, have you tried with another one? also try boot on Safe mode

 

[PedroHenriques]

what about your hard drive, have you tried with another one? also try boot on Safe mode

Tried without hard-drive, just with a usb stick but still the same behaviour, black screen, sleep light on.
The only thing that seems to work is just wait 10/20 minutes and it boots again..
If I put it in pause, closing the lid, it seems to wake up 90% of the time, but sometimes just makes the black screen behaviour.
this clip I just did moments ago:

 

[wahit]

Hello everyone. Had this problem today: white screen. Tried all kinds of stuff and was even thinking about getting a new HD because I thought this one was dead. Someone pointed me at this topic.

I just did this and... voilá! It's alive again!

nvram fa4ce28d-b62f-4c99-9cc3-6815686e30f9:gpu-power-prefs=%01%00%00%00 nvram boot-args="-v" reboot

Thank you very much for the help OP!

 

[wahit]

Ah, sh*t. It's messed up again.

 

[jasonp99]

Ah, sh*t. It's messed up again.

You may need to remove the kext files. Search this thread and you'll find it.

 

[jasonp99]

After my 2011 15" MBP working for many months with the nvram and kext fix, it's dead again. It was working fine this morning, then went away for a while and when I came back it had a black screen and the fan was blowing loudly. Wouldn't wake up, turned it off and now it makes a disk sound when it turn on it won't do anything else, screen is still black. Tried to resetting nvram, smc, boot in safe mode, single-user mode, nothing will show on screen.

Is my GPU finally completely dead and took something else with it?

 

[jasonp99]

After my 2011 15" MBP working for many months with the nvram and kext fix, it's dead again. It was working fine this morning, then went away for a while and when I came back it had a black screen and the fan was blowing loudly. Wouldn't wake up, turned it off and now it makes a disk sound when it turn on it won't do anything else, screen is still black. Tried to resetting nvram, smc, boot in safe mode, single-user mode, nothing will show on screen.

Is my GPU finally completely dead and took something else with it?

Update: unplugged power connector, rebooted and voila, it booted into single-user mode! What the heck?! Ran my little shell script that sets the nvram to force off gpu, then rebooted and it was all good. Logged in and immediately make back up of my important files. Connected back power, still fine.

What happened? Not trying another reboot at the moment.

 

[MirComputers]

If you don't remove the power to the dGpu, it will keep heating in the background and rot inside the chassis to a point where it prevents the whole lap to power up again. At that point, a quick reball, re-issue the nvram command and then permanent HW disable should get you back and running!

 

[mbp17forever]

If you don't remove the power to the dGpu, it will keep heating in the background and rot inside the chassis to a point where it prevents the whole lap to power up again. At that point, a quick reball, re-issue the nvram command and then permanent HW disable should get you back and running!

having installed dosdude1's dGPU disabler program (after set nvram fa4ce28d-b62f-4c99-9cc3-6815686e30f9:gpu-power-prefs=%01%00%00%00 ) doesn't mean that it will always power up? even if AMD chips rot at some point?

 

[Tito Fuentes]

Hello everyone I am a super newbie and my grammar is terrible, I been a apple user since OS9 always interested about mod and solutions. I own a late 2011 17" and sometimes have problems.


Why sometimes because I believe those lines and the rebooting is not cause by faulty video card in some cases, like mine, yes understand I can’t use 10.14 or 10.15 because the lose of metal.


So I stay on 10.13 and in there I have notice since November of last year that occasional I have been bother by estrange behavior were if I use a free to download application and because I use only once that application change to different page look and inmidate start causing problem with my computer with a malicious behavior.


My MacBook is a second computer and not the main one so occasional download free app that do the same.


Two days ago download a bar activity monitor and this app crash the machine bad and created a logging entrance at boot with out permission of mine, I believe that was malicious .


I was able to come back and erase that free and the test app after that I contact another developer from a pay app I was suspecting also, that came in via browser app and did some play with my setting.


Since then the macbook behave very well.


So respectful thanks all the hard worker in the site and what I saying is we may looking on the wrong place for a fault.


I will report in the future if something change but as last nigh my book works perfect in 10.13 with native app and a couple of very reputable app that I look very hard to get and they not causing any malicious situation.


That is my take about this situation.

 

[Rados94]

Привет! Заранее прошу прощения, если я неграмотен в выражении своих мыслей, английский не мой родной язык. Проблема такая как у всех посетителей этого раздела форума. MacBook 1398 года выпуска начала 2013 года работал нормально последние несколько лет, вплоть до обновления с El Capitan до Mojave.Проблема, как и у всех, - неподдерживаемая дискретная видеокарта, до определенного момента мак работает, а потом появляется черный экран, но сам компьютер работает и решается только тогда, когда мак остынет. Откатился на High Sierra, проблема не ушла, потом откатился на El Capitan, сначала проблем не было, а потом снова появляется черный экран, только ведет себя совсем по другому, например шапки не выглядят загорится, и вы можете включить его сразу, не дожидаясь охлаждения, как если бы возникла новая проблема. Подскажите пожалуйста в чем может быть проблема?

 

[Macbookprodude]

Радос94.. дуже тебе прошу, використовуй гугл-перекладач, щоб ми змогли тобі допомогти з твоєю ситуацією, стосовно цих проблем на комп‘ютері. Я тебе не зовсім розумію, бо моє знання російської дуже мало. Як і ти здогадався, я українець і ніколи вчив російську мову. Отже, підкажу тобі вживай Гугл-перекладач, і заздалегідь тобі можемо допомогти, добре ? Не лише я, а й для всіх, хто може пропонувати тобі пораду на вирішення комп‘ютерної справи.

 

[Macbookprodude]

For those who still have this problem - just get a 2012 or 2015.

 

[jeremiasm]

I have early 2011 15 MacBook Pro and it has a fully dead AMD card.
The problem is that I cant run scripts on single-user mode (CMD+s) or anywhere else because I can't see anything.

Can I enter single-user mode via ssh or target disk mode etc? Or does anyone have any other solution?

 

[trifero]

I have early 2011 15 MacBook Pro and it has a fully dead AMD card.
The problem is that I cant run scripts on single-user mode (CMD+s) or anywhere else because I can't see anything.

Can I enter single-user mode via ssh or target disk mode etc? Or does anyone have any other solution?

You should see the display in Safe Mode. There must be something else wrong.

 

[jeremiasm]

You mean that it uses Intel graphics on safe mode?

 

[trifero]

You mean that it uses Intel graphics on safe mode?

Of course. Did it myself dozens of times in my Macbook Pro 2011 every time that the values on NVRAm dissapear. Maybe the backlight on your display is broken? Try put a n strng light behind tha display. Maybe yopu can see something.

 

[jeremiasm]

Tried to boot to the recobery mode and svreen stil stays black. The display worked before nvram reset.

 

[trifero]

I mean…maybe the screen is there, but no backlight. Try a strong light triught tbhe apple logo in the bezel.

 

[sososaure]

Hello, I wonder if it is possible to undo the setting to ignore the second graphic chip?

 

[jeremiasm]

reset NVRAM?

 

[jeremiasm]

Hello, I wonder if it is possible to undo the setting to ignore the second graphic chip?

reset NVRAM?

 

[jeremiasm]

I mean…maybe the screen is there, but no backlight. Try a strong light triught tbhe apple logo in the bezel.

I tried to boot to the recovery mode and put a strong light behind the display but still can't see anything. What would help?

 

[jeremiasm]

?

 

[Macbookprodude]

?

Dude, just get a 2015 MacBook Pro - you won't have these issues anymore.. or use intel only and forget ATI chip.