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I got into single user mode without much trickery, as my AMD card seems to work up to the point where the drivers are loaded, just with stripes across the screen. So I got to remove the drivers as described at asyncro. I rebuilt the kextcache (alternatively deleted it), but my Mac doesn't boot to internal graphics but uses the discrete graphics (according to ...


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I've got a macbook pro mid 2010, affected by this issue. After a long search, i thin i found a workaround to avoid pay a lot of money for an old laptop repair (no warranty). This issue is avoid the mac to use the nvidia chip, yes i know, you lost this funcionallity, but u get one stable equipment. As super user (sudo su -) go to /System/Library/Extensions ...


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I have a 2011 iMac, not a Macbook Pro. Apple has a replacement program for the 6970M video card in these machines for similar issues described here. http://support.apple.com/en-us/HT203787 The commands listed by @smr in single user mode work just as well on the iMac to effectively disable the 6970M and force the machine to use the integrated GPU on the ...



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