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Hi there. I have X401A with Core i3 and now I have everything work except headphones output. the audio codec is alc272 but it work with alc270 too. My question is : How can I get headphones output work? Because no headphones option in Sound prefer~.

You need to edit the patched AppleHDA or edit DSDT 

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Hey Rufabf..   My brain just isn't working..   I have the Same specs ..   Minus Nvidia and i5 3210M processor

(Same System as HOEL K55A R500A RH52) 


I keep getting kernel panics when I try to install...  Cant figure out why.. Ive removed all Nvidea stuff..    so should be a straight ahead install....

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