I have just bought a Dell XPS 8300 with integrated 7.1 audio. Extremely glad with the acquisition and it is functioning extremely satisfactorily (picture as well as sound) like a HTPC through my 1080p TV by the use of a HDMI cable. On the other hand, while I connect the computer by the use of the optical/digital out to my 5.1 amplifier I barely obtain 2 channels. That is, the RealTek HD Audio Manager barely provides me the selection of 2 channels on moreover the HDMI otherwise digital audio devices and no method to choose surround speakers. Is there any configuration I'm missing to allow surround sound on optical/digital out?
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