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Issue With Haswell HDMI Audio.no output

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My computer was using Intel core i5-4210u ,My computer was using Intel core i5-4210u ,Sound card is cx20751/2,I use applealc inject id=3 successfully drive my onboard soundcard,but I found that HDMI Output is still no sound,how can i deal with it?

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HDMI audio requires patching of the Azul FB in order to inject HDMI connector type 0008 0000 to the relevant output port.

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      Hello, and thank you for your help!
       
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