Second plugged-in HDMI TV is always detected as DTV(DVI) which has no audio (AMD Catalyst)

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lokhang0623

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Apr 27, 2014
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I am using HD7970 with 13.11 Catalyst.

I have two HDMI TV, both are using HDMI to HDMI connections, when only Display(A) is plugged in the card, it is detected as DTV(HDMI) and no problems with audio, but when I plug in the second Display(B), it is detected as DTV(DVI), which has no audio device detected.
If I reverse the plug-in order, connect Display(B) first, I can get the audio, but again no audio from Display(A), I tried to exchange ports but no differences.

Is there a way to have both displays detected as DTV(HDMI) so I can choose which audio device whenever I want?

[Sorry for my English]
 
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lokhang0623

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Apr 27, 2014
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Yes, my Display Card has only 1 HDMI port, my second TV is connected through Displayport to HDMI converter, and audio works fine when only this displayport is used or first plugged-in.
 
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tmt69

tmt69

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Apr 23, 2011
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So you are saying both ports supply audio through the HDMI, but only one at a time?

If not then which one does?
 
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lokhang0623

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Apr 27, 2014
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Yes, only one at a time.
The first plugged-in has audio, but the second plugged-in does not, regardless which port is used first.
 
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tmt69

tmt69

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Try going into the catalyst settings and playing around (AMD 'right click on desktop') with the HDMI audio features, I haven't run an AMD card in a while so I won't be able to point you to anything specifically, but often times streaming two audio channels is just a matter of clicking a check-box or something of the like.
 
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lokhang0623

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Apr 27, 2014
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Thanks for your reply tmt69.

The problem is when the TV is detected as DTV(DVI) in Catalyst - (in my case, it only happens with the second plugged in TV), it says "this display does not support audio playback" and thus the playback device is not shown in control panel.
 
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