Audio out from HDMI to TV cuts out

I'm looking for help to troubleshoot the following problem:
I have a brand new iMac, 27", i7 (my first Mac ever). Using the Moshi Mini DisplayPort HDMI adapter, I output video and audio to my LG 55LH90 1080p LED TV. Everything is fine except that approximately every 15 seconds, the audio will cut out for 2 seconds completely.
The problem occurs regardless of whether the audio is from iTunes, YouTube, VLC, Quicktime, etc.
Does anyone have any ideas about what could be causing this problem or how to fix it?
Thanks

I have solved my problem.
After spending an inordinate amount of time trying to troubleshoot this (trying different cables, adapters, settings on my TV and iMac, different devices, scouring the internet for help, etc.), and with both LG and Apple customer service pointing the fingers at each other, turns out Apple was right (and LG was incompetent).
The fix was simple. When I was about to give up, I played around with my TV settings one more time. I disabled the "Clear Voice II" setting on my LG TV and it made the problem go away. Audio is 100% fine over HDMI now. Hurray!

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Separate audio output from HDMI

Hi,
I connected my iPad 2 through HDMI to my monitor.
The image is very good but unfortunately, my monitor doesn't have speakers so it cannot play sounds and when I connected iPad to monitor, iPad redirected all it's sound to HDMI.
So is there a way to specify to iPad to play sound on it's speakers or 3.5 mm audio output and play video through HDMI?
Thank you,
Lisur

Is this the adapter you are using?
http://store.apple.com/us/product/MD826ZM/A/lightning-digital-av-adapter?fnode=3 a
If it is, then you have next to the HDMI socket also a Lightning socket to which you could connect any audio system with a Lightning connector.
You may have a larger choice of audio systems for the old 30-pin connector, but then there is this solution:
http://store.apple.com/us/product/MD824ZM/A/lightning-to-30-pin-adapter-02-m?fno de=3a
It's your call now...

Mac Mini Audio Intermittent over HDMI, Cuts out with Assertion in kernel.log

Hello. I've been having trouble with a mac mini (Mid 2011) that I bought on Thursday. It's running OSX 10.7. The Mac Mini is the $599 unit.
I've got it hooked up to my Sony BRAVIA HDTV (also this year's model) via HDMI, with audio configured to be delivered via HDMI to the TV alongside video. Initially the audio will play through my TV, but after an hour or two of watching something, it will cut out, and there will be no more sound coming out of the TV from the mac. Ultimately, the only way I can fix it is to reboot the Mac Mini. I've also observed that at about the same time sound cuts out, the following error message appears in kernel.log:
Aug 12 19:21:40 joshs-Mac-mini kernel[0]: Sound assertion "0 != result" failed in AppleHDAWidget at line 3957 goto handler
Aug 12 19:22:10 --- last message repeated 5 times
As far as I know, assertions failures usually mean software problems (bugs). I suspect I may be encountering a kernel-level bug in Lion, as this error message is showing in kernel.log.
The following is a list of diagnostic steps I've taken:
- I've double-checked the sound output device in preferences. It didn't spontaneously change from SONY TV (HDMI) after sound cut out.
- I've tried changing output to the internal speakers. It plays sound from the mac mini (as expected). When I change it back to HDMI, still no sound from the TV.
- I've tried turning off and back on the tv. No effect.
- I've tried unplugging and replugging the HDMI cable. No effect.
- I've tried replacing the HDMI cable with two other alternates. No effect.
- I've tried other HDMI inputs for my TV with HDMI attached. No effect.
- Note: I've got a ps3 and xbox360 on the TV that has successfully used the HDMI inputs and cables tested on. They've never had this type of problem, so I don't think there's a problem with the TV.
- I've tried rebooting the mac and resetting the "PRAM" (Command-Option-P-R before the grey screen on bootup). Sound still cuts out after a while.
- All updates are applied.
Does anybody else have any ideas about what I could try to fix this? This problem is pretty much a deal breaker, as rebooting the mac mini mid-movie kind of destroys the movie-watching experience.
Thanks

I'd just like to jump in on this thread to report exactly the same problem.
2011 Mac Mini (the 2.5GHz i5 model) running Lion, Sony Bravia TV, HDMI sounds cuts out after a while with the console error "Aug 15 18:30:25 Mini kernel[0]: Sound assertion "0 != result" failed in AppleHDAWidget at line 3957 goto handler".
Interestingly, after the error occurs, I can still get 5.1 sound through Plex, but not through Quicktime. 2.0 sound and system sounds all fail until I reboot the system.
Any help would be appreciated. I would prefer not to have to return the Mini.
Thanks.

Audio out from HDMI port?

I have connected my TV and Booklet via a standard HDMI cable. This same HDMI cable works fine with my DVD player. When I use it with my booklet, only video seems to be sent to the TV via the HDMI cable. Is the HDMI out port supporting only video, or audio as well? I understand the booklet supports HDMI 1.2, which should support an audio profile, as far as I know.
Let me know if you have been able to get audio to work over HDMI.
thanks,
John

I found your discussion attempting to find the answer to the same question.
I won 5 of these things at auction and wanted HDMI to be a selling point
I researched far and wide and now I think I have the answer now.
I had to reload the OS and all the drivers for all 5 units
I read some of the replies to this topic and with some people saying that they had audio and I didn't, I felt that either I was crazy or someone is not truthful. so i had a thought ,
after about the 3rd unit I tried to just try to hook it up to a TV bare without Nokia updated software
What do you know, it worked.
So I have come to the conclusion based upon using both units after testing them with and without the update, is with the stock driver provided, you will get the audio from the HDMI port; if you update the software from the updater(which I noticed it says the driver is MANDATORY)
You will not.
There is a plus and minus on both occassions
With the graphics driver update you can scale your video once hook to an HDTV to full 1080p HD; but you wont get any audio (at least for now)
Without the update you will get the audio out , however you will only get the same native resolution as the netbook 720p
So contemplate which feature is more important you and make your choice.
Higher picture quality(full HD) with the driver yet I need 2 cable (HDMI AND 2.5 to RCA)
OR lower resolution720p but audio as well
I hope this helps but i see my next challenge for both you and is to see if we can roll back the driver if we want audio over HDMI.

I need to have audio out from HDMI and headphone jack simultaneously

I need to have audio out from HDMI and headphone jack simultaneously.
I seem to be able to select one or the other, but not both ? !
Thanks

No. You can only use one sound output:
Why can't I select HDMI audio on my Mac mini?
If you connect an HDMI display or television to a Mac mini (Mid 2010 or later), you might not be able to select the HDMI audio device (in System Preferences > Sound > Output). This can happen if you also have headphones plugged in to the computer. Unplug the headphones to be able to select HDMI audio.
Mac computers: Frequently asked questions about using HDMI

Audio out on HDMI from mac book pro?

Audio out on HDMI from mac book pro?

Yes, a retina MBP will support audio via HDMI.
Ciao.

Multiple Audio out: usb dac audio out and hdmi out

Good afternoon everyone, I have a 2010 mac mini with the following audio set up.
- A usb dac (xtreamer) connected to my stereo amplifier
- an Hdmi cable to the tv to get video and audio diretcly to the tv
Is it possibile by any chance to get simoultanesly audio output both from usb audio out and hdmi audio out???
In "midi preference panel" I tried to create a "virtual" sound card but i am not able to get sound simoultanesly. or via hdmi, or via usb.
this is quite disappointing because if I want to listen to music with the amplifier and then watching a simple video with mac mini and tv only I need to go back to the audio preferences and set up manually each time.
Is it possible to solve this issue???
Thanks a lot and gretings from Italy

I can select ATV audio out (Airplay setting) to either my Airport Express or my computer so it must be transmitting via airplay. Using a combination of Airserver, Airfoil and Airfoil Speakers I managed to get the ATV audio content on both my PC and my Airport Express at the same time but it cuts out the ATV audio.
My aim is to have a movie on ATV transmitting the Audio to ATV AND my stereo (which is hooked up to the Airport Express).
Cheers

I have a mid 2009 Macbook Pro and i know the Mini-display port does not support audio out but does it support HDMI out? or do i have to buy a Mini-display to DVI and then a DVI to HDMI adapters?

I have a mid 2009 Macbook Pro and i know the Mini-display port does not support audio out but does it support HDMI out? or do i have to buy a Mini-display to DVI and then a DVI to HDMI adapters?

Run MDP to HDMI for picture. Use a cable like this to run sound from your audio out on your Mac to your TV's audio in. That's about all you can do.

Trying to connect a Belkin brand audio cable from my MacBook Pro to a Sony flatscreen TV. Cannot get any sound from the laptop out of the TV. What am I doing wrong?

I'm trying to connect a Belkin brand stereo audio cable from my MacBook Pro to a Sony flatscreen TV (Apple "genius" handed me the cable to purchase.) I have tried all the ports in the back of the Sony, and tried the volume on both the cable and TV remotes. I cannot get sound out of the Sony from my MacBook Pro laptop. What am I doing wrong???

Downloaded your operating manual. It appears that you need to connect the HDMI to HDMI 1 and the audio to the input socket just to the right of the VGA socket (i.e., between the VGA and the RF input connection). The picture on page13 seems to be the clearest I could find:
Although it's not exactly clear I think they are talking about a standard 3.5 mm (1/8") stereo jack for the audio inpu as opposed to the more common RCA jacks used in the row just above that VGA input socket.
I haven't checked the manual as yet whether you need to set anything special with the controls other than input select.
Note, if that truly is a 3.5 mm stereo jack cables are very common. In your case it would just be a cable with a 3.5 mm jack on each end.
Update:
You will have to experiment with this but I think you will need to try pusing the input button to select either HDMI1 or PC (or Component?). The manual is not clear on this (page 31). Sometimes it just comes down to pushing buttons.

Audio out options question - HDMI + component?

I have looked thru the manual and forums, but have not seen the answer to my question.
If I hook an ATV to my TV with HDMI, and also use the Right and Left (red and white component) audio out cables to my stereo (which does not have TOS link digital audio capability), will I get sound delivered to BOTH units at the same time? Basically, I'd like sound to go to my TV and my stereo.
I see in the ATV manual that it is possible to use HDMI and digital audio out. DVI video and component audio out, but I need HDMI video/audio AND component audio out.

The easiest way to accomplish this is to use the HDMI cable from the ATV to the TV and then export the sound from the TV with with either RCA, toslink, or digital audio out cables to your stereo. That is what I do at home. I have a DVR cable box, DVD player, and PS3 Blue Ray player and a HD video camera all hooked up via HDMI to a HDMI hub to the TV and then I can switch the stereo from either the TV audio out (all of the above) or the airport express where I stream music to the Stereo. There is no doubt that the sound quality from the BR HDMI cable of the PS3 has a superior sound.
A tech at curcuit city told me there is a difference in sound between, a expensive Monster HDMI cable and the less expensive cables now available on line, but I have not tried a A/B comparison yet, but am planing to do so. $50-60$ vrs. a few dollars on line aftermarket.
Hope this helps.

Trouble running DVI video and HDMI audio out of 6950

Twin frozr iii 6950 2gb (X2 crossfire)
Asus VG236 Monitor
Windows 7
MSI P67A-G43 Motherboard
Yamaha RX-V371 Receiver
I have two Twin Frozr iii 2gb 6950 cards and am attempting to use the HDMI on the video card solely for 5.1 audio out to my receiver while using video through the DVI jack of the same card directly to my monitor without success.
-Audio functions if I run the HDMI from the card into my receiver, then out to my Asus VG236 monitor.
-Audio functions when I run from the card to my receiver then out to my plasma tv.
-Audio functions if I have the DVI run directly to the Asus VG236 monitor and HDMI to the receiver then plasma tv (only in dual display and the tv must be on for audio to function this way. If I turn the tv off even though the receiver is still on the audio stops working and windows sound lists the 'AMD HDMI Output' as not plugged in).
-Audio even fuctions when I run DVI to the monitor and HDMI to the receiver, then out to the HDMI port on the same monitor but the monitor will only run at 60hz this way even when DVI is selected on the monitor, as though it defaults to the HDMI when dvi and hdmi are both plugged into the monitor.
And if i run the hdmi to the receiver "HDMI IN" port without using the "HDMI OUT" port from the receiver to anything, like my tv or monitor, the sound doesn't work and in windows sound the "AMD HDMI Output" is listed as "not plugged in" .
I purchased this monitor for the true 120hz capabilities, the HDMI on this monitor doesn't support 120hz, the maximum is 60hz. DVI is required to run at 120hz. I don't see any option in windows sound settings or CCC to resolve this.
I have also tried disabling onboard audio in BIOS with no effect.
For now i'm running the audio out my MOBO jack through an optical cable to the receiver but optical only supports 2.1 sound.
Any suggestions you can offer would be appreciated, thank you

bump,
Anybody?

G62-a50sf : (only) audio out over HDMI?

We have a G62-a50sf notebook at my gf's place that we'd like to use as the source for a (somewhat) audiophile audio set-up. One possibility to get better-than-headphone-output into a good receiver AND avoid using a separate DAC would be to feed the digital audio output over HDMI to the receiver.
The question I'm hoping to get an answer to is: will this be possible while retaining video output on the laptop's own screen?
thanks in advance,
René

Sorry, but your Mac doesn't send sound over HDMI, only mid-2010 and later MBP's send sound (and even then some require different adapters). Yours is a 2009 MBP, so only video will go over the HDMI cable. You will need to run audio from the audio out to your TV or digital audio out from your optical audio out to your receiver.

5.1 or 7.1 audio out with hdmi? MBP 15inch 2011

I've gone through two adapters and endless hours of trying to get 5.1 audio to my receiver via hdmi or with optical and I can't seem to get it to work. Well, let me correct myself. I got it to work in osX but whenever I start vlc the audio goes from 7.1 to some random configuration where it only comes out of the side speaker. I can't seem to get dts or ac3 to consistently output from vlc to my receiver. Honestly if I have to use the optical I don't care I just want it to work. I got normal audio but not dts or ac3 to work with osX. Then using bootcamp and windows 7 I got the vlc to output only some ac3 via the optical to the receiver. I never got hdmi sound to output in anything other than 2 channel in windows. Anyway if anyone can spread some light on how to accomplish this it would be greatly appreciated at the moment I am using http://www.kanexlive.com/v2 which they claim will pass uncompressed 5.1/7.1 as well as dts and ac3 through. This entire thing is frustrating. Their technical support is laughable.

If anything, the external decoder is your best bet, as it doesn't require drivers/updates/more money
A product to consider is...
http://www.roxio.com/enu/products/toast/titanium/overview.html
As it authors blurays, excellent interface, options with the software, audio editing. Great for creating movies and such.
Does this answer your question?
Ron

No HDMI audio out option, only Airplay

Hi everyone,
Hoping to get some enlightenment here as I am at my wits end. Here's my setup:
Macbook Pro (mid 2011 era)
Belkin MDP to HDMI converter
Monoprice HDMI cable to Denon AV-1912 receiver
Prior to upgrading to Mavericks and numerous updates to my Apple TV, I was able to plug in to my Denon receiver via HDMI and get display and sound options pop up through System Preferences, no problem. Everything worked beautifully. So there is no issue with my sound card not supporting HDMI.
Now, whenever I try to connect through HDMI, I can only get the display to work. Trying to bypass the internal speakers through the Sound panel in System Preferences yields no results. My Denon receiver only shows up in the Sound Output panel as an Airplay option, not as HDMI. When I select it as Airplay, the receiver automatically switches to the Airplay (Internet Radio) source and kills the display connection it had made with HDMI.
I can't for the life of me figure out how to either:
a) Disable Airplay in my Denon receiver OR more apropos to this forum,
b) Get HDMI restored as an option in my Sound Output preferences.
Any suggestions welcomed!
Thanks,
Jeff

I have the same issue. Setup is:
-- mid-2012 MBP (non-retina) running 10.8.5 (including the very latest supplemental 10.8.5 which was supposed to fix a different issue with an HDMI audio connection not working after a Mac's wakeup from sleep).
-- MBP connected to a Harman Kardon BDS 577 AV receiver's HDMI input (this is a 5.1 receiver, connected to 5.1 speakers).
-- MBP and receiver connected via PNY mini-DP-to-HDMI adapter, which both its Amazon description & review explicitly say supports passthrough audio on Macs, and a high quality AmazonBasics HDMI cable (ditto).
-- The receiver's HDMI output is connected to an Epson EH-TW3200 projector's HDMI input (projector is Euro version of the US Epson 8345; it has no audio whatsoever).
-- The Epson is set to mirror the MBP display, and the MBP's internal display resolution is set to match the Epson's (1080p), which appears as "Epson PJ" in the menubar's Displays pulldown.
1) The issue we're having here is very clearly different from the one with the HDMI connection not working after wakeup (numerous thread about it in Apple Discussions & other forums), since there the HDMI option for sound output device is available (in the Sound Preferences panel, the equiv. menu-bar shortcut and in Audio MIDI Setup and VLC Audio --> Audio Device submenu), but didn't work properly after wakeup.
2) With our issue, when everything is connected but the projector is turned off, sound works fine. I have the option to select HDMI in all the aforementioned locations (the device is called "HDMI TV"), and, when chosen, sound is properly output via the AV receiver according to the source material (5.1 with both DTS and AC3 encodings work fine, as does stereo).
3) As soon as the projector is turned on, video appears fine as expected on the projector, mirroring the MBP's screen, but the HDMI option disappears from all above lists of sound output devices. If I was in the middle of a movie on VLC, audio switches to the builtin speakers on the MBP.
4) Trying to trick the sytem by defining a new audio aggregate device in Audio MIDI Setup when the projector is off, having it include the HDMI device, and then trying to choose it when the projector is on doesn't work -- the aggregate device is grayed out and can't be chosen.
5) TjoffenF's solution above doesn't help me: For me VLC behaves exactly like the rest of the system, so using it doesn't help. I tried several versions of VLC, including old (1.1.2) & new (2.0.9, 2.1.4).
6) Jackmo69's solution doesn't work for me either: The order the various components are switched on and/or connected doesn't matter. As soon as the projector is on, HDMI audio option simply disappears and the MBP stops using the HDMI port for audio.
7) Generally, this seems to be a problem with something called EDID. This is the protocol which HDMI and DVI devices use to tell each other about their capabilities (resolution, audio supported, etc.). Somehow the Mac thinks the HDMI device it is attached to has no audio at all, so it falls back to its internal speakers. I initially thought the problem was with my AV receiver -- whether or not the projector is turned on, it should report its own EDID, not the projector's, so I shouldn't have seen the "Epson PJ" option, right?
8) I contacted the local tech support for Harman Kardon. They hadn't heard of an issue with their receiver, but don't have Macs. From their POV, which sounded reasonable, if the issue occured with a PC laptop, they'd agree that their equipment was the culprit. They lent me a a Windows7 laptop with a builtin HDMI port (Dell Studio 1558) for a week to test.
I performed hours of experiments with it, replacing the MBP with the Dell, all other things in the setup being identical with the exception of the PNY adapter (same AV receiver, same projector, same cables, same VLC version, same source files).
9) The result:
With the Dell, all the source files output audio via HDMI to the receiver with no issues, and turning the projector on or off has no effect on the audio. To me, this proves that the issue is the Mac, probably an HDMI driver issue. AFAIK the PNY & similar adapter are simple mechanical adapters (the actual video signals are identical), so given it transmits audio fine from the MBP (when the projector is off) I don't see how the adapter could be the problem (I don't own a TV, so couldn't test with one).
10) Extensive googling yielded a couple other people with similar problems using various Macs (earlier but still post-2009 MBs and MBPs as well as a Mac mini), projectors and AV receivers. Their solutions were to (a) run TOSLINK audio seperately from the Mac to the receiver (not an option for me, since my receiver accepts TOSLINK only for an audio-only source) or (b) use an EDID emulator device, which spoofs the EDID so the Mac will agree. There was at least one person who had the issue appear after upgrading fromOS X 10.6 to 10.8 (Mac and other components didn't change), which is yet another indication this is a Mac driver issue.
10) I really don't like the idea of EDID emulators; it's a kludgy solution (needs its own power supply and additional HDMI cable), expensive ($100-$150), and not available locally. Reports on them say they don't always work.
11) I'm very much ****** at Apple at this point. The only solution I can see right now is to buy a media streamer with HDMI output, to circumvent the problem -- not an ideal solution, since it means adding a middleman, but cheaper and and more likely to work then an EDID emulator. (Incidentally, an Apple TV wouldn''t work for me as a streamer because it supports very few video codecs & file types -- not that I'd be happy to give Apple more money to fix a problem they're reponsible for.)
If anyone has since found another solution, I'd realy appreciate hearing about it.

HDMI audio and Audio Out mutally exclusive now?

Hello,
I have a 2010 MBP and use an external display via HDMI as well as external speakers via the headphone jack. This worked just fine until a recent update. After a recent update, when I have my display connected via HDMI the audio out no longer works. While I am able to route sound to the display's speakers via the Sound Settings, I would much prefer to listen to sound via my Klipsch speaker system that is connected to the headphone jack.
When I remove the HDMI connection, the speaker system works fine. The moment it is plugged in, the sounds cuts out. This used to work fine?
Any body have any information on this? When I google search on this issue, all I see are people having trouble routing sound via HDMI - which is basically the opposite of my current problem. It appears as though audio is know mutally exclusive -> it can only be routed to HDMI if its connected. If it is not connected, then headphone jack works fine.
Thanks for your time.

when you did your update, it probably routed your audio through you HDMI cable which is it's main purpose since most people who coneects via HDMI doesn't hook anything to the source.
try hooking up your speakers to your display's headphone jack if you have one.
other than that, i don't know what else to tell you.
good luck...

Audio out from HDMI to TV cuts out

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