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Dsdt with brightness control fixed for Acer V5-571g (Hd4K)

About This File

I'm a newbie but i patched my DSDT and it works perfectly for me.

I run Mavericks 10.9.0 on my Acer V5-571g 

mainboard intel h77 Ivy Bridge CPU i5 3317U and HD4k.

I removed all other graphic kext Nvidia, GeForce and Ati.

Now this DSDT add the brightness bar in System preferences.


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