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DVI to HDMI connected to LED TV and no sound?

M

mrtomwolf

macrumors newbie
Original poster
Dec 30, 2011
3
0
I have a 2011 17" Macbook Pro and have connected my DVI to HDMI and into my new Sharp Aquos Quattron and cant get any sound.

To be more specific when I connect my cable to the computer and then to the TV and then go into my system pref's on the "Monitor" category its seeing my TV but when I click on "Sound" its not seeing my TV in both the "Line Out" and "Line In"

I went into the "Audio MIDI" setting in my utilities to see if it would fine the TV there and no luck.

On most of my friends computers you plug in the cable and the switch is basically seamless. The computer screen basically shuts off and the control is not on the TV which does not either seem to be the case with mine though I can someone, dont recall how I made this work but can get the images on my TV.

Not to sure if this has anything to do with it but I have noticed a few times in the past month or so that I will turn my computer on and not be able to turn the volume up or down on its external speakers. The only way to get this to work is to plug in a pair of headphones, turn the volume up and down and then disconnect them.
 
It is not DVI what you have, it is called "Mini DisplayPort":
Mini DisplayPort (MDP) / Thunderbolt
Mini DisplayPort is the current digital standard on all current Macs to transfer video to an external display or TV. It has been introduced in 10/2008 with the release of the Unibody MacBook and MacBook Pros and has gradually been adopted on all other Macs.
MDP is capable of transmitting video, and since 2010, audio too. MDP is a miniaturised version of DisplayPort. It is also license free and can support resolutions of up to 2560 x 1600, which Mini DVI and Micro DVI are not able to do.
Since 2011, all Macs come with a Thunderbolt port, which is meant for fast data transfer and also as means to connect to an external display device to mirror or extend the Mac's screen.
To learn more about Thunderbolt (TB) and its compatibility with Mini DisplayPort (MDP): Introducing Thunderbolt​
MR_video_out_Mac_Mini_DP.png
MDP adapters can be bought online from:
MDP to VGA adapter from Apple
MDP to DVI adapter from Apple
MDP to Dual-Link-DVI adapter from Apple

Moshi Mini DP to HDMI Adapter with Audio Support adapter from the Apple Online Store

Mini DisplayPort + USB to Dual-Link DVI adapter from Monoprice
Mini DisplayPort to DVI adapter from Monoprice
Mini DisplayPort to VGA adapter from Monoprice
Mini DisplayPort to HDMI adapter from Monoprice - *NOTE* This product does NOT support audio for Macs that outputs audio through the Mini DisplayPort.
Mini Displayport Male and USB Male/Toslink Audio to HDMI Female Converting adapter from Monoprice
Mini Displayport Male and USB Male Audio to HDMI Female Converting adapter from Monoprice - *NOTE* Will only support 2 channel stereo. Will not support 5.1 Dolby Surround like the above adapter.

Mini DisplayPort to Mini DisplayPort Cables from Monoprice
Mini DisplayPort to VGA Cables from Monoprice
Mini DisplayPort to DVI Cables from Monoprice
Mini DisplayPort to HDMI Cables from Monoprice​

Also of interest: "What is "Mini DisplayPort"? Is it an industry-standard? How is it different from or better than Mini-DVI and Micro-DVI?"
​
Click to expand...
from
Anyway, did you make sure, the MDP to HDMI adapter you have transfers audio?

PS: One thread per topic is enough. If you realise, your thread is in the wrong sub-forum, just use the REPORT BAD POST button (
report.gif
) and ask for it to be moved.
 
Sorry, I made a mistake. I bought a "KANEX" MDP to HDMI with Audio Support cable from the Apple store and this is not working. After I had this problem with not being able to recognize Audio I went to a friends house who was using his MacAir in the same way and it was working on his without any problems. We then connected my machine to his cable, not the one I purchased and to his LED TV and still not seeing anything showing in the "Audio" area of the system pref's?
 
simsaladimbamba said:
It is not DVI what you have, it is called "Mini DisplayPort":

from
Anyway, did you make sure, the MDP to HDMI adapter you have transfers audio?

PS: One thread per topic is enough. If you realise, your thread is in the wrong sub-forum, just use the REPORT BAD POST button (Image) and ask for it to be moved.
Click to expand...

Sorry, I made a mistake. I bought a "KANEX" MDP to HDMI with Audio Support cable from the Apple store and this is not working. After I had this problem with not being able to recognize Audio I went to a friends house who was using his MacAir in the same way and it was working on his without any problems. We then connected my machine to his cable, not the one I purchased and to his LED TV and still not seeing anything showing in the "Audio" area of the system pref's?
 
mrtomwolf said:
Sorry, I made a mistake. I bought a "KANEX" MDP to HDMI with Audio Support cable from the Apple store and this is not working. After I had this problem with not being able to recognize Audio I went to a friends house who was using his MacAir in the same way and it was working on his without any problems. We then connected my machine to his cable, not the one I purchased and to his LED TV and still not seeing anything showing in the "Audio" area of the system pref's?
Click to expand...
It is interesting that Apple explicitly refers customers to the Moshi Mini DP to HDMI adapter ($34.95 US) and to the Griffin rather than to the KANEX. All three adapters support audio/video. The question then is "Does your model MacBook Pro support audio over Mini DisplayPort?"
 
mrtomwolf said:
Not to sure if this has anything to do with it but I have noticed a few times in the past month or so that I will turn my computer on and not be able to turn the volume up or down on its external speakers.
Click to expand...
IIRC that happens when your MBP thinks digital audio out is connected as you can't adjust the volume for digital audio output.
 
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