As far as I know you can not control volume the HDMI output on hackintosh. You will see a dimmed volume icon on the right upper menu. It means you can not control it. Use the minitor volume nob. Please correct me if I'm wrong.
To get the audio jack work without dsdt, get the latest AppleALC1.3.4, and modify your config.plist for layout-id 17 as follows.
Both HDMI and audio jack work great. Install clover v.2.1 files from Novaspirits for HDMI audio, and for AppleALC audio you can find kext and dsdt file at the InsanelyMac forum. I do not know if it's OK to provide the InsanelyMac link here.
Credits : MacPeet and jamiec @ InsanelyMac
My Hackintosh works very good. The only thing I want to sort it out is iMessage issue.
Received sms through iMessage app sometimes include myself as a co-sender. I never heard of this kind of issue, but this really annoying when I try to reply because my number also included for the...