very old thread,
based on my experience
Intel GPU, I am talking about my Intel NUC, latest intel driver, no realtek, no sound on powerdvd, forgot to check my 30hz monitor refresh rate thing.
Nvidia card, 30hz monitor refresh rate, no sound, set to 23,24,50,60 and sound is back.
denon receiver bitstreaming, pure direct, only 2.1 channel if you set the sub to on, but if lpcm, puredirect will show multi channel pure direct and 7.1 is out, or you can set it to standard.
note: I heard a everyone said that no matter who did the decoding, everything will sound the same, but not for me, lpcm and pure direct means no audyssey but bitstreaming means audyssey engaged, lets not talk too much about this
receiver set to 5.1, if you set your receiver to 5.1 of course your 7.1 became 5.1
amd radeon card not tested.