Can't bitstream HD audio - E450 & HD6320 throught HDMI

Hi people.

First off all and like the other thread I try to make all around the web, sorry for my approximate english.

And here I go, there's my specs :

Computer :

Netbook hp dm1 4131ef

Processor & graphics : AMD e-450 with HD 6320 graphics (HDMI out)

4 Go of ram

AVR :

Onkyo HT-R538 (certified Dolby True-HD and DTS-HD MA)

So, like many people, I want to bitstream my HD audio throught my little netbook to my Onkyo AVR.

Before that, all working good : AC3, DTS, mkv and m2ts working fine with MPC-HC, AC3 filter and CoreAVC.

In the property, my HDMI sound output show True-HD, DTS-HD MA formats so I presume it's ok ? The catalyst version is 12.6.

Anyway, I've tried many solutions, for DTS-HD here's some examples :

- mpchc + ffdshow > no sound at all if I tick DTS-HD in the HDMI section > Only DTS if I untick the DTS-HD button (I see it on my AVR)f

-mpchc + LAVaudio > no sound at all if I tick the DTS-HD button > Only DTS if I untick the DTS-HD button

-Power DVD 10, 11, 12 > only DTS, no HD

-TMT5 > like the others, just DTS, no HD

Same thing for the Dolby-TrueHD files, m2ts and mkv ones.

So I'm desperate, all my specs seems to be compatible but I can't get this HD sound working. On my BD player the DTS-MA sound working well anyway.

Somebody can tell me what's wrong please ?

Thanks very much in advance.

Best regards.

Cheers.

Thanks for your help guys.

The answer was here, just here http://www.avsforum.com/t/1227161/edid-overrides-to-solve-bitstreaming-issues-for-ati-5xxxs.

Yes, in 2012 we have some hardware that need some tweack for work... Very strange but it's working now, DTS HS and True HD Dolby bitstream throught my HDMI output.

Thanks again guys.

Cheers.