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Why does the GPU fail? Macrumours did a write up discussing this in more detail, especially in relation to the repair program but in essence, the AMD GPUs have design defects, and over time & use, causes them to fail at a much faster rate than other GPUs on the market.
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This will help extend the life of our MacBook Pro by preventing the AMD GPU being powered on for longer than the boot sequence, and therefore prolong the time until failure. We can exploit this by forcing the gmux chip to only use the iGPU and even tell it to power down the dGPU.
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This chip allows for the operating system to tell the gmux chip which GPU is required for the workload, iGPU for best battery life, or dGPU for performance. These are both wired to the screen via a chip commonly referred to as the gmux chip. Prerequisitesġx Machine capable of creating a Live CD onto your USB of Ubuntu Overview:ĭid you know that the 2011 MacBook Pro has two graphics cards, the dedicated GPU (dGPU) and the integrated GPU (iGPU). This is just a personal note of what I did to get my Macbook Pro Late 2011 with failed/failing AMD GPU to boot Ubuntu 20.04 LTS, hopefully it helps someone.
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