Macbook Pro 2011 with an AMD GPU with problems: Macbook Pro 2011 freezes on the gray screen due to AMDRadeonX3000.kext. Nvram fa4ce28d-b62f-4c99-9cc3-6815686e30f9:gpu-power-prefs=%00ĪMD6000Controller.kext - full power AMD GPU - increases temperature and decreases battery life.ĪMDLegacySupport.kext and AMDLegacyFrameBuffer.kext are dependencies of the AMD6000Controller.kext.ĪMDRadeonX3000.kext - Power off AMD GPU - lowers the temperature and increases battery life -> System Preferences -> Energy Saver -> enable Automatic Graphics Switching. Pro 2011 with AMD GPU running properly - gpu-power-prefs to AMD GPU (default) - gpu-power-prefs=%00%00%00%00:
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