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モデル番号A1286、発売日 2011年2月/2.0, 2.2もしくは2.3 GHzクアッドコアIntel Core i7プロセッサ

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Screen go black or freezes

The screen go black, and then I turn on and freezes as the video shows. The battery is ok, what could be?

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I’ve saved about twenty 2011 15” MBP using this gem, it’s also free ;-)

To turn off the dual graphics capability of the GPU, install gfxCardStatus for Mac

Download  https://gfx.io

This will disable GPU switching and force the MacBook Pro to use the higher powered discrete graphics card rather than the integrated GPU.

  1. Go to the  Apple menu and choose “System Preferences” and then go to “Energy” control panel
  2. Uncheck the box next to “Automatic graphics switching”
  3. Note the text which states this may decrease battery life on the MacBook Pro “When automatic switching is disabled, your computer will always use high-performance graphics. This may decrease battery life.” – if you are not OK with that do not disable this option
  4. Close out of System Preferences
  5. You can always return to the Energy preference panel to re-enable the GPU switching feature if desired.
  6. For MacBook Pro users who want to manually control their GPU use, you can use a third party tool like GFXCardStatus which has been around for quite some time and still works on most modern MacBook Pro models as well.
  7. https://gfx.io/switching.html

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This solution is not working because GFXCardStatus keep forcing to 'Dynamic Switching', even I mark just the 'Integrated Only'.

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The macbook pro 15” 2011 has a problem with the Radeon graphic card. It’s well documented on the web, check it out. To be sure connect an external monitor to your MBP and if you get the same unstable video than the graphic is failing.

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Yes, indeed. This is the problem, but I don't know how to fix it. I already did this https://www.youtube.com/watch?v=nFFPk3Se..., but it keeps failing (less than before).

I was thinking to do it again to see what happens.

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PJBG さん、ありがとうございました!
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