I have a HTPC with an IntelHD 4000 chip. The HDMI output is connected to a Pioneer VSX-527 amp which in turn is connected via HDMI to my Samsung HDTV. I previously had Windows7 installed on the HTPC and everything worked, but since I'm a long time Linux user I'm not comfortable using Windows, so I decided to install Ubuntu 12.10.
The problem is that with this setup I have no audio (the video displays perfectly). If I connect the HTPC directly to the TV the audio works perfectly.
I tried all the tips I found online but with zero results.