In short, I've got audio over HDMI working on Apple TV with NVidia 100.14.19 driver, but other driver versions (173.14.12, 177.80, 180.06) don't work. Sound works before X starts (even with nvidia module loaded). But after X starts with driver other than 100.14.19 , sound disappears. It seems to me that video driver in some way (control pins or interrupt) disables HDMI codec.
You can get more info at http://artem-astafyev.blogspot.com/2...-apple-tv.html
Are any thoughts how to make audio work on newer drivers?