Tried patching the existing DSDT included in the zip file for the e6420 but it didn't work, went back to VoodooHDA. I actually thought I had HDMI audio working but I didn't, so I will start reading the forums to see how that can be fixed. Jake Lo, just wondering when your on FaceTime does the video screen of FaceTime act up with flashes of colour and picture freezing/repeating, kind of like a animated Gif?