I have a ATI-6450 and a Onkyo TX-SR313 AV connected by HDMI and am in need of a fix please.
My problem is slightly different to most though from what I am reading, first of all with the Generic PnP Driver installed according to Windows Sound I have all supported formats, XBMC will only play normal DTS files with DTS-HD or TrueHD enabled, in Power DVD options they all show too UNTIL I play something then I lose DTS-HD but PCM and normal DTS remain, if I pause then DTS-HD returns until I play it.
This lead me to try various EDID fixes, a couple I created myself and a number posted on here with a variety of results, most don't change anything at all some break audio completely but one I found enables DTS-HD & TrueHD but only at 48Hz though 192 is listed in the EDID file and 192 PCM continues to work which confuses me, the file in question is "Samsung LE46B650 - ONKYO TX-NR509" and is on the first page.
I have exported my detected EDID from MONINFO too which I have attached below.
TX-SR313.zip 1k .zip file
Please let me know if you require any further information.