I have a problem with my ALC892, on an ASRock mainboard (ASRock 890FX Deluxe4).

I get only stereo sounds if I use SPDIF connection, in general. My amp shows that is getting surround sound only when I use the Test feature of Windows 7. This test feature allows to know which formats are supported by the audio chip. The tests render correctly both Dolby Digital and DTS. You can find this test under Sounds, Playback Devices, Select Digital Audio, then "Properties".

I am using Windows 7 x64, with the latest drivers from the official Realtek website. I also tested other driver versions, both from the Realtek website and from the ASRock one, but had no luck.

Thanks for the help.

Some specs:

• CPU: AMD Phenom II X4 965
• MOBO: ASRock 890FX Deluxe4 (with onboard Realtek ALC892)
• Audio amp: Onkyo R-380 (works fine with other sources like PS3 and Xbox 360)