[SOLVED] HDMI Board mute on startup?

[challenge]

tried this when it's mute:

Code:

pi@moode:~ $ aplay -D plughw:0,0 /usr/share/sounds/alsa/Front_Center.wav
Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono

no errors as you can see but there's no sound from speakers.


Found some info HERE: Archlinux wiki Troubleshooting#HDMI:

If aplay does not output any errors, but still no sound is heard, "reboot" the receiver, monitor or tv set.
Since the HDMI interface executes a handshake on connection, it might have noticed before that there was no audio stream embedded, and disabled audio decoding.
If you are using a standalone window manager, you may need to have sound playing while plugging in the HDMI cable.

I tried the unplug and plugging back the HDMI cable while playing music but it doesn't work. 
I have to "reboot" (aka power cycle) the HDMI board while moode is playing and sound starts right there.
So could this be kernel?