Smae bug here
Windows 7 Professional x64
i5 4670k
gigabyte z87m d3h
brazil
This only works if i boot the computer with the hdmi plugged.
And if it is working from the start, and i need to turn off the hdmi cable, or if i set to use only my another montior(using VGA), the hdmi sound stop working if i set to use the Tv again.
ridiculous