No passthrough audio (Nvidia Legacy build 6.0.0)

[Numinel]

My current setup:
Receiver: Onkyo TX-SR608
NAS: Synology 413j (NFS file server)
Mediaplayer: TizzBird F20 (Android, unstable)

I am not happy with my current mediaplayer since it is unstable.
A friend of mine recommended me to test OpenELEC so I installed Nvidia Legacy 6.0.0 on an Asus EeeBox EB 1012P (Nvidia ION) but I cannot get audio pass-through to work.
General audio setting is HDMI 5.1 and the audio for the Blu-Ray movie I play is pass-through but my receiver only get PCM (which lacks the depth of DTS HD-MA).
My friend tried the same movie on his setup (NUC DC3217IYE, Intel HD 4000, Intel Core i3) and audio pass-through works for him.
So...is this a problem with the Nvidia legacy build or is it a hardware issue with the EeeBox?

[chewitt]

See if this community build works better for you:
https://www.dropbox.com/s/hjmt08l560gxku...9.tar?dl=0

If yes, subscribe to this thread for changes http://openelec.tv/forum/115-vdpau-nvidi...r-ion-ion2

[Soli]

http://lmgtfy.com/?q=hd+passthrough+nvidia+ion

[lrusak]

ION first gen lacks the ability to passthrough bitperfect audio (DTS-HD and TrueHD)

You can however have kodi use the dts and ac3 (dolby) streams

You will have to enable advanced settings mode
http://kodi.wiki/view/Settings#Settings_levels

Then enable a passthrough device and set the applicable options
http://kodi.wiki/view/Settings/System#Audio_output

[Numinel]

I found the general passthrough settings when I accessed the box through the Kodi remote app on my iPhone.
I enabled DTS-HD and True HD. Seems to works fine on the pure BluRay backups I have.
The advanced settings mode was not obvious too me but never mind, the remote app solved it
Time to play around some more.
I guess I will end up using a NUC instead of the EeeBox.
Thanks for the help.