Topic Title: No Dolby/DTS from soundbar over HDMI Radeon 7750
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Created On: 02/13/2014 02:33 PM
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 02/13/2014 02:33 PM
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Posts: 1
Joined: 02/13/2014

Graphics Card

Radeon 7750 low profile

AMD Catalyst Driver Version, and Driver History


Operating System

Windows 7 Ultimate 64 bit

Issue Details

I have connected the hdmi from my radeon 7750 to the hdmi in port on my lg nb4530 sound bar and am only getting pcm 2.0 output.  i have tried several different movie files in vlc and windows media player.

how can i get the output as dolby digital or dts?

i checked in sound settings of the amd hd audio device and it says it supports dolby and dts.  Exclusive mode is also enabled under advanced options.


This is a htpc so i really need this to work.

according to the radeon 7750 specs:

  • Integrated HD audio controller
    • Output protected high bit rate 7.1 channel surround sound over HDMI with no additional cables required
    • Supports AC-3, AAC, Dolby TrueHD and DTS Master Audio formats



Motherboard or System Make & Model

Intel deskboard DQ965GF

Power Supply


Display Device(s) and Connection(s) Used

panasonic 50 inch plasma px-p50g30b

CPU Details

core2 duo e6320

Motherboard BIOS Version


System Memory Type & Amount

kingston ddr 2gb

Additional Hardware

LG NB4530a soundbar

Additional Details

The hdmi cable connecting the soundbar to the radeon is a brand new amazon basic 1.4 hdmi cable - i have tried 3 others.

The soundbar outputs dolby and dts from other devices (i.e ps3, xbox, wdtv live etc over hdmi)

Sounds like i need the radeon to pass audio to the soundbar to decode it?

Edited: 02/13/2014 at 03:14 PM by drokkeh
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