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Please help me with DSDT errors fixing

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Hi everyone, I have dell Inspiron 3521 laptop which I've installed Mavericks on it , but the one card display Intel HD 4000 it work,

and secondary card AMD Radeon HD 7670Mit not work

and key brightness not work

and key fn not work

need to use DSDT method to make it works. Unfortunately I was stuck in fixing errors, I've Google some articles to fix some of the errors, but there still part of them left.

Can anyone help me to fix them? Thank you !

Sorry for my poor English...


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