Permanently Disable 2011 15"/17" MacBook Pro Dedicated GPU - gMux IC Bypass

Discussion in 'MacBook Pro' started by dosdude1, Aug 25, 2018.

  1. trifero macrumors regular

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    May 21, 2009
    #26

    Can you share it with us?
     
  2. DeanPSN macrumors regular

    DeanPSN

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    #27
    I used the method from realmacmods with the command lines and then removing one small resistor to completely shut down the dGPU so no more heat and better battery. Very pleased with the results.
     
  3. Matejh macrumors newbie

    Matejh

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    Jul 5, 2014
    #28
    Here is my version... No need to take out the logicboard.
    Don't forget to remove R8911. I prefer rotating it 90˚ on one of the pins (see picture).
    Tested with El Capitan, Sierra and High Sierra (clean install from USB on actual modified MacBook Pro 15).
    Same limitations apply:
    • External video not working
    • Brightness not working
     

    Attached Files:

  4. DeanPSN macrumors regular

    DeanPSN

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    #29
    Did you do any of the wire soldering?
    The method i used from realmacmods, was just removing the R8911 and the command lines they provided.

    Sierra and all previous versions working 100% without any further modifications, High Sierra has no brightness control and if the mac goes to sleep the screen won't wake up (without a restart), unless you do the extra step they included to solder 1 wire.
     
  5. trifero macrumors regular

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    May 21, 2009
    #30

    So no Brightness control in both methods? And no display out?
     
  6. DeanPSN macrumors regular

    DeanPSN

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    #31
    Brightness is fine as long as you stay on Sierra, not High Sierra.
    Display out as far as i know is gone once you disable the dGPU.
     
  7. Matejh macrumors newbie

    Matejh

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    Jul 5, 2014
    #32
    Yes I did the wiring on 5 MacBook Pros so far. I do this for customers who want to use their computer a little bit longer.
    Before this solution surfaced I did the GRUB method but few of the customers were returning after applying updates or reseting PRAM (even if we told them not to). I see this hardware solution as more bulletproof for customers then software methods.
     

    Attached Files:

  8. ibrahim monem macrumors newbie

    ibrahim monem

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    Egypt
    #33
    thank you for sharing

    Take a look at this.

    Say in this way ,

    We are fix all VGA of Macbook A1398 2012 - 2015 by Hardware to Intel VGA card. Not Edit EFI and can Reset PRAM. It very easy with 3 Jumper.



     
  9. Matejh macrumors newbie

    Matejh

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    Jul 5, 2014
    #34
    This thread is about MacBook Pro 15 2011.
    But if you are willing to explain how to do it on MacBook Pro 15" 2010 and 15" Retina 2012-2015 please go ahead.
     
  10. trifero macrumors regular

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    May 21, 2009
    #35

    Sorry… what about the owners of a Macbook Pro 17 2011??? :D
     
  11. dosdude1 thread starter macrumors 68000

    dosdude1

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    Feb 16, 2012
    #36
    The Retina MacBook Pro has a completely different gMux circuit, as it uses eDP instead of LVDS. It is actually pretty easy to tell the system to use only Intel HD Graphics on one of these systems, however it is unnecessary as the GPUs in Retinas never fail. The method I've posted in this thread will also work on 2010 15"/17" models, however it is also unnecessary on those machines, as the GPUs in them never fail either.
     
  12. slimmy18222 macrumors newbie

    slimmy18222

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    #37

    Thank you for the amazing job dude. I was guessing if same problem of brightness, and also external display, would happen in Mojave, but as i see from beta i could say yes unfortunately. Maybe it's a stupid question, but remove the dGPU and start log board without is wouldn't solve the problem?
    So far wich is best method to have a working mac? Now I got a 17" early 2011MBP and i would like to bring it to alive.

    Now I remember that i had a late 2008mbp 15'' wich have discrete and integrated.. well, believe me, I really don't know what i've done while i was using multimeter on it to check voltage bud i'd short something ( really good smell of burn). Result is that the dGPU was not even detected anymore, like it's not there! And the Mac was running perfectly with no issues with dosdude1 Sierra patch! Only in High Sierra and Mojave there was problem with brightness not adjustable and backlight won't turn on after close and re-open lid (like those 2011 problem!) but external display port was working perfectly.

    I see that you had not try this in 17'' model. Would you like to use my logic board?
     
  13. dosdude1 thread starter macrumors 68000

    dosdude1

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    Feb 16, 2012
    #38
    The '08/'09 MCP79-based boards are very different from the newer ones, which is why the display port works even with the dGPU not working. I have actually done this mod on a couple 17" 2011 boards recently, and it works fine on them too. I still need to make a wiring diagram for that board. As for the brightness, I am actually working on a custom microcontroller that will restore brightness control functionality, by generating a PWM signal for the backlight IC. I'm not sure how well it will work at this point, but my goal is to get it to be fully integrated with the system, and work with the native backlight control drivers in OS X.
     
  14. slimmy18222 macrumors newbie

    slimmy18222

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    #39
    Thank you DosDude1, I was suspecting that they were different. The only common behaviour that i notice is the lack of PMW signal in both machine from High Sierra, no fortune using Sierra kext in both High and Mojave. So maybe the problem that lead to this situation of non adjustable brightness is the same! Could be fixed via software maybe rather than hardware?
    I've got no experience in soldering, but if you will share the wiring diagram for 17'' model i'll give a try for sure, and would be really nice to have back brightness control if your solution goes on whit the micro controller :) I think there is less chance for display out :( That is a big limitation in my opinion.
    Just one last question, yours 2011 tool to launch after the refi variable fix, what exactly do? Remove kext? Tanks and keep on the great job on mac's world
     
  15. dosdude1 thread starter macrumors 68000

    dosdude1

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    #40
    HUGE UPDATE: For the past couple weeks, I've been working on a custom microcontroller implementation to add software backlight control back to systems that have had this modification performed! Currently, it's in a somewhat early prototyping phase, but within the next few weeks, I should have some PCBs made and the driver fully implemented! You can see a video of the device and preliminary driver in action here. Once complete, I will have some for sale for people who have used this mod on their system.
     
  16. gsboris macrumors newbie

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    Sep 25, 2018
    #41
    Cool stuff. Any luck on enabling HDMI out with this mod? Is it even plausible?
     
  17. iMacC2D macrumors 6502a

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    Jun 24, 2010
    #42
    This is nothing short of brilliant. The 2011 machines were incredibly powerful and capable units, and would continue to be excellent machines if not for the dGPU. The software and firmware fixes are never permanent, macOS does an automatic update in the background or the customer updates to a new version of macOS and the issue occurs again.

    A hardware fix is much more resilient, and with backlight control, even better.

    I have some otherwise useless 2011s sitting around, so I'm looking forward to testing this out.
     
  18. dosdude1, Sep 28, 2018
    Last edited: Sep 30, 2018

    dosdude1 thread starter macrumors 68000

    dosdude1

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    Feb 16, 2012
    #43
    Another update: PCBs for the custom backlight controller implementation have arrived, and they look great! Within the next week, we will get the boards all soldered and ready to go. You can read more about the project on my friend's webpage, who I am working with on this project. Once the PCBs have been soldered, we will be selling the remaining ones of the 17 that we have.

    IMG_20180928_144703.jpg Image uploaded from iOS.jpg Image uploaded from iOS(1).jpg
     
  19. dosdude1 thread starter macrumors 68000

    dosdude1

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    Feb 16, 2012
    #44
    UPDATE: DyingLight boards are now available for purchase! You can find the eBay listing here; they are available world-wide. Info and installation instructions can be found on my friend's webpage.
     
  20. dosdude1 thread starter macrumors 68000

    dosdude1

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    Feb 16, 2012
    #45
    For those of you wanting to see it in action, here is a demo video of my custom backlight controller module for 2011 15"/17" MBPs with hardware disabled dedicated GPUs, fully installed and working in a machine!

    More info and links to purchase one can be found here.

     
  21. zackkmac macrumors 6502a

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    Tulsa
    #46
    Hey, @dosdude1, quick question. I found your "easy" method on your website here and was just wondering, how does one reverse that if we get the logic board physically repaired and wish to use the new dedicated GPU? Would it just need a PRAM reset?

    Sorry if this has been asked before, I searched but did not see anything.
     
  22. dosdude1 thread starter macrumors 68000

    dosdude1

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    Feb 16, 2012
    #47
    Yes, you just need to reset the PRAM. HOWEVER, I would HIGHLY advise that you NEVER get one of these GPUs replaced, as AMD, being trash as usual, never actually fixed the issue with those Radeon HD 6xxx series chipsets. Therefore, any new GPU you were to install on these systems would be the same defective garbage, and just fail again in the future. The ONLY good solution is the one detailed in the OP of this thread, completely disabling the crappy AMD GPU.
     
  23. JMVB, Oct 8, 2018
    Last edited: Oct 8, 2018

    JMVB macrumors member

    JMVB

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    #48

    @dosdude1 the downloadable software contained in your website, what it does?
     
  24. zackkmac macrumors 6502a

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    #49

    Gotcha, thanks for the clarification. I think I had gotten it mixed up with the 2008ish Nvidia chips which are the ones that are replaceable with better-made units.
     
  25. JMVB, Oct 10, 2018
    Last edited: Oct 16, 2018

    JMVB macrumors member

    JMVB

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    May 16, 2016
    #50
    Supercool answer@dosdude1, thank you very much!
     

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