Topic Title: No sound via Mini Displayport on R280X
Topic Summary: I can't get any sound from my TV when it's plugged in via Mini Displayport to TV's HDMI
Created On: 11/02/2013 12:10 PM
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 11/02/2013 12:10 PM
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scodenton
Peon

Posts: 1
Joined: 11/02/2013

Hi,

I'm having trouble playing movies from my PC onto my TV, via either of the two mini displayports on my VTX3D R9 280X.

The cable is a new Mini displayport to HDMI cable. HDMI into any of the four my Sony Bravia KDL-40W5810 HDMI ports (tried all four).

As I understand it, this graphics card should send audio via the mini-dp ports. If someone could confirm that alone, that would be a relief.

Monitor is using the HDMI port, so I thought the mini-dp would be ideal for playing movies on my TV.

I'm on Win 7 64-bit. I see the TV in the device manager as a Generic Plug and Play. In Sound, I don't see any playback device there relating to the TV, so can't set it as default. 

When I plug the cable in, I get that "An HDMI-to-DVI display connection has been detected", which isn't correct, but perhaps it's telling me something is wrong, what though, I can't figure out.

When installing afresh the latest Catalyst, I have made sure HDMI Audio Driver is ticked. Did uninstall it once to try but no joy, so reinstalled it back in.

Any pointed, much appreciated.

VTX3D R9 280X 3GB GDDR5 UEFI

Win7 64-Bit Ultimate

Catalyst 13.11

Gigabyte H55M-UD2H

Intel i5 750@2.67GHz

 11/03/2013 07:02 AM
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Hardwood
Dungeon Master

Posts: 4011
Joined: 01/27/2008

Maybe the easiest solution is to put your monitor on DVI and use the HDMI port for the TV. It could have something to do with your cable. I dunno about the audio so that's a guess.

Did the card come with a miniDP to HDMI adapter?



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 12/22/2013 02:32 AM
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thechuckster
Peon

Posts: 5
Joined: 05/30/2012

The mini display port will never pass through audio, only hdmi, despite what the book says.

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 12/22/2013 11:54 AM
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zipsi
Elite

Posts: 1045
Joined: 11/22/2010

That is.. not entirely true, my monitor currently runs using mDP-> displayport cable, while I don't use my monitor built-in speakers as a primary playback device, it does work just fine! Maybe the adapter itself doesn't forward the audio stream into hdmi cable?



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 12/22/2013 08:13 PM
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thechuckster
Peon

Posts: 5
Joined: 05/30/2012

I stand corrected

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 12/25/2013 12:15 AM
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sabariboss
Peon

Posts: 47
Joined: 12/13/2013

I am having MSI AMD R9 280x 3gb GAMing & I don't have such issues while 

connecting my Hdmi to SOny bravia..

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