I choose hdmi raw and set to auto as you suggested...It didn't work.
When I hit the status button now it says:
Input:hdmi 3
Pcm
2.0 ch
Output: auto surround
2.1 ch

When I look at the actual receiver, when it's in auto mode it only shows the fl, fr and sw as being enabled. I think the subs are working but at a very, very low level. I can feel very minute movement on the actual sub if I touch it and it's barely audible. The volume on the subs is set at maybe 60% so I would expect a much louder output than its getting.
When I choose surround instead of auto, on the receiver itself it shows all of the speakers enabled but it doesn't actually use all of them.
I just tried a DVD in the laptop. I initially tried playing it using VLC player and it was no different, I then tried it with windows Media player and it worked, I was getting full surround and there was noticeable bass from the subs.
I hooked up the laptop to the same hdmi port as the android box so this confirms the hdmi port is good, and it appears to me that it must be a setting or settings in the android box that is preventing it from working.
Do you have any other suggestions?