Boot into recovery single user mode (press and hold Command + S + R) and run the following commands: nvram fa4ce28d-b62f-4c99-9cc3. Change the gpu-power-prefs and disable SIP. Other 'fixes' offered disable the brightness control whereas ours will mean you can continue to change it with no issues. Known Issues: On High Sierra there are problems related to the screen brightness and sleep issues. Our solution is the best around and will mean you can use your machine as normal without any issues. Mid–2011 iMacs with AMD Radeon HD 6970 graphics cards experienced similar failures and in August of 2013, Apple initiated a Graphics Card Replacement Program for the computers, replacing the graphics cards of affected iMacs at no cost. The 15' MacBook Pros from 2011 had manufacturing issues causing failed graphics. All of the 2011 MacBooks use AMD cards, including the AMD Radeon HD 6490M, the AMD Radeon HD 6750M (both 512MB/1GB variants) and the AMD Radeon HD 6770M.
The issue appears to affect 15 and 17-inch MacBook Pros that have discrete graphics cards. Unfortunately, although there is a built-in option to keep the higher-power NVIDIA card on at all times, there is no option to keep it off at all times. It is unclear why the MacBook Pros are experiencing problems, but Apple forum users have speculated that it could be heat related. MacBook Pro (Mid-2010), Core i5 or Corei7, 15 and 17 models automatically switch between integrated Intel (lower power) and NVIDIA (higher power) graphics. Apple has several suggestions for customers seeing a gray screen, including booting into safe mode and reinstalling OS X, which has not managed to solve the problem for MacBook Pro owners experiencing issues.Īpple has done logic board replacements in some cases for affected users, but reports indicate that the issue has reoccured after a logic board replacement as well. An example of the screen glitches 2011 MacBook Pro owners are seeingĪlong with graphical issues, MacBook Pro owners are also seeing frequent reboots to a gray screen.
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