ASRock Z68M-ITX/HT HDMI audio out SOLUTION:
Not sure if its a BIOS issue or an alsa issue but Ubuntu is picking up the wrong default HDMI device for this onboard alc892 (cougarpoint) chip. The rear HDMI port is plughw:0,7 but it the OS is using a default of plughw:0,3.
To fix, create this file:
Rey, just boot into recovery and do and fsck and then a kernel repair.Code:pcm.!default "plughw:PCH,7"