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HDMI to TV no Audio - Hear Me Out

B

bgiaach

macrumors member
Original poster
Mar 22, 2012
53
0
NYC
Alright, before the grumpy members of this forum start telling me to search Google and the Forum for answers, pause. I've already searched high and low for a solution to this issue but to no avail found nothing.

Here's the deal, I've have my rMBA plugged into my TV via HDMI with the audio settings on my computer showing the TV as the audio destination but no audio is heard. (This seems to be the case with many rMBP owners but let's continue)

I checked the settings on the TV and after fiddling with different settings (on the TV and Mac) still got no sound. I unplugged the HDMI and plugged it back in a few times (both with the TV and with my Mac). Still nothing.

Now I thought maybe it was an issue with the TV not supporting HDMI audio-in but that's not the case either because my Xbox 360 runs via HDMI into the TV and audio works just fine.

Seeing how none of the posts on this forum or apple's support forum seemed to help I did one last thing. I ran my computer through HDMI input 2 on the TV and ran audio out via a stereo mini cable into the back of the TV. The audio worked but it was coming through on the wrong channel which makes since seeing how the audio input on the TV is for HDMI 1. Now here's the kicker, when I switched my Mac back to HDMI 1 the audio being played through the stereo mini input turned off. It's as if the TV knows the audio should be coming from the HDMI but it's not.

WTF?

Is this an OS bug?
 
bgiaach said:
Alright, before the grumpy members of this forum start telling me to search Google and the Forum for answers, pause. I've already searched high and low for a solution to this issue but to no avail found nothing.

Here's the deal, I've have my rMBA plugged into my TV via HDMI with the audio settings on my computer showing the TV as the audio destination but no audio is heard. (This seems to be the case with many rMBP owners but let's continue)

I checked the settings on the TV and after fiddling with different settings (on the TV and Mac) still got no sound. I unplugged the HDMI and plugged it back in a few times (both with the TV and with my Mac). Still nothing.

Now I thought maybe it was an issue with the TV not supporting HDMI audio-in but that's not the case either because my Xbox 360 runs via HDMI into the TV and audio works just fine.

Seeing how none of the posts on this forum or apple's support forum seemed to help I did one last thing. I ran my computer through HDMI input 2 on the TV and ran audio out via a stereo mini cable into the back of the TV. The audio worked but it was coming through on the wrong channel which makes since seeing how the audio input on the TV is for HDMI 1. Now here's the kicker, when I switched my Mac back to HDMI 1 the audio being played through the stereo mini input turned off. It's as if the TV knows the audio should be coming from the HDMI but it's not.

WTF?

Is this an OS bug?
Click to expand...

I actually had the same issues. The only way it worked for me was to restart the system with the HDMI cable connected. Sometimes it worked sometime it never. It's a real PIA.
 
duervo said:
1. Do an NVRAM/PRAM reset, then
2. Reset SMC.

People that have had your issue have done those and it seems to have fixed it for most.
Click to expand...

All these issues seem somehow related to the SMC/PRAM and Apple still has not released an update yet. It's been a while and apple still won't comment on it. Apple you need to start supporting your customers a little better.
 
I agree. Unfortunately, as long as there is a workaround (a reset), they've probably placed the issues lower on their priority.
 
duervo said:
1. Do an NVRAM/PRAM reset, then
2. Reset SMC.

People that have had your issue have done those and it seems to have fixed it for most.
Click to expand...

Thanks for the suggestion. I did the NVRAM/PRAM and SMC reset and it still didn't work. I also tried (after doing the resets) to leave the HDMI plugged in and then restart the computer while connected to the TV and still nothing.

I just want to watch my movies from iTunes. Screw it, I'm buying an Apple TV tomorrow...
 
in your applications/utilities folder - what frequency is your audio set to? try setting it to 48k if its not.
 
I know yesterday I mentioned giving up and just buying an Apple TV. Well, that's exactly what I ended up doing and I have to say, it's much better. Not only can I play my music, movies, and netflix, but if I did want to mirror my computer it works just fine doing that as well. Only thing I noticed was a bit of lag when moving the mouse quickly. Not a big deal... Better than screwing around with things that should just work.
 
Thanks

Thanks for mentioning this. Helpful to know that HDMI—even on Apple's latest and "best"—doesn't always work.

And, yes, it SHOULD just work.
 
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