I'd guess the Dell is just a very loose driver, but without seeing what the Dell is seeing as it's edid and what the Mac is seeing it's hard to troubleshoot. I'd want to see what another laptop does first that's not the same dell. If you could even try another Mac that would be helpful too. I would lean towards something not-quite-standard in the HK, since in the AV world, Apple is notorious for very strict compliance with hdmi standards, which can cause problems.
Actually, I didn't. Quote: I'd guess the Dell is just a very loose driver, but without seeing what the Dell is seeing as it's edid and what the Mac is seeing it's hard to troubleshoot. I'll try to find one with an HDMI port Apparently some PCs don't do HDMI audio passthrough, just like the pre Macs didn't, and some PCs only support PCM output on the port, not encoded multichannel when I got the Dell, it had an ATI video driver which resulted in the AV receiver only getting downmixed stereo; an update to the version was needed for full multichannel passthrough.
I wonder if Apple has such an internal tool -- you'd expect it would be useful to debug drivers. Quote: If you could even try another Mac that would be helpful too. I'll definitely see if I can get someone to loan me one Quote: I would lean towards something not-quite-standard in the HK, since in the AV world, Apple is notorious for very strict compliance with hdmi standards, which can cause problems. Makes sense to me, since, again, I wouldn't expect the Mac to know the Epson's name when connected via the receiver. I actually have seen a bad adapter cause this, by just slightly corrupting the signal enough so that it would still look mostly fine, but the audio would be unusable.
There does seem to be an ioreg command to grab edid in osx, and it used to be in the Windows display settings as hex, and there does seem to be an online edid decoder too. I'm on my iPad so can't try them atm. That's good to know. I'll buy one of the cheap ones locally that explicitly claim to support audio. Both utilities say they support the CEA extension block, which is where audio capabilities are stored. I ran the Extron utility on the Dell on 4 scenarios. I repeated the set of tests with the Eldim utility, to see if the tools were giving consistent reports. Where is the 4th date coming from?
In this case, the base block will show an extension block flagged, but the second block will be filled with zeros. At any rate, if it's not in the registry, is there somewhere else Windows might be storing it? Could the display driver be using info from anywhere else to determine its behavior? If this is indeed a Dell issue here, as I tend to think given I'm also not seeing the extension block with the projector direct-connected, it's not purely an HK issue , I can't compare the above EDID dumps' audio profiles, but I'll reiterate that it doesn't make sense to me that the HK is reporting the Epson's name at all to the Mac, under any circumstances.
Quote: There does seem to be an ioreg command to grab edid in osx, and it used to be in the Windows display settings as hex, and there does seem to be an online edid decoder too. If you have any info on how to get that info in OS X, I'd be grateful -- raw data is fine. I used to develop microcode for networking hardware, so I'm not afraid of getting my hands dirty In light of what the Dell is showing, I really want to know what the Mac is seeing; I don't want to go down a rabbit hole of debugging Windows drivers One possible theory is that the HK is simply not sending a proper extension block, and the sloppy Dell's ATI driver doesn't care whereas the Mac's does -- but if that were the case, I'd expect there to be addtional HDMI input devices which also cared, and the issue to have shown up and fixed by HK by now.
I can't reach clear conclusions from what I'm seeing, and I hope omniron or someone else here can comment -- I'm out of my depth. If indeed there's a clear receiver issue, it would really help if I had a concrete "smoking gun", so I can forward it to HK's support -- they want the Dell returned ASAP and they're going to close the issue as "resolved" since the Dell works unless I have something detailed showing otherwise.
Even if I don't make any headway with them, it would also be useful to figure out possible workarounds before investing money in them e. The following in Terminal will generate a binary file length should presumably always be a multiple of containing the block. I'd expect the flag to be 1, and no blank block inbetween.
However, the projector name doesn't appear anywhere in the dump though I know the Mac knows it, since it's the label used to select the external display -- as opposed to the parallel Dell scenario, where the name shows up in the dump. Could this be some other info that's for some reason encoded in the descriptors? I'm giving up at this point, as I'm out of ideas; I may try circumventing the issue with a streamer at some point. Whether or not the HK receiver is doing something wrong, from my PoV it's yet another time Apple's messed up.
The policy of attempting to make things simple by giving users little choice in this case, not having a mechanism to force use of the HDMI port results in an overall non-working system. Have you tried And "Apple has "messed up" even though you are using a Belkin adapter or it could be the HK unit? Yes, thanks for the suggestion -- I did try Quote: you are using a Belkin adapter Like I said, I've now tried two different adapters. They were the 2 highest-rated on Amazon, both explicitly claimed audio support on Macs, and numerous people in the Amazon reviews reported that they do indeed do audio fine on Macs.
It's highly unlikely that I got two different types of adapters that exhibit the same symptom to manufacturing defects. Not to mention, audio works find in all variations as long as the projector is off. And that applies to my situation how? Quote: or it could be the HK unit? There could be something wrong with it, but it does seem to work fine with numerous other HDMI sources, including PCs.
Quote: No need for that. As a consumer, my purpose is getting a simple bog-standard config to work which this certainly is ; I have no idea whether there is something non-spec-compliant with the HK, but Apple's system design should take the real landscape of devices out there into account, to help users out. My beef with Apple in this case is they don't do the obvious thing: Providing a simple override option for the automatic interface-detection via, say, the Audio MIDI Setup utility, the same way that Windows gives the option of an override. Anyway, thanks to all who made suggestions.
Did you upgrade to It happens much less frequently with the latest OS's, but I've seen things mysteriously work with a completely clean install that wouldn't before. Did you report the issue to Apple? They can't fix this if they don't know about it. Hap wrote: wavelet wrote: mdporter wrote: Have you tried Clean install on an external drive. It wasn't likely the issue anyway, since the MBP's existing I will, although not holding my breath.
A 6-month response time was typical, even for a bug I had that caused kernel panics. The bug reporting system is very closed -- several of the bugs I reported were marked closed as duplicates, but with no other info; there's no way for me to see their referents, so no way of knowing whether it's even acknowledged as a bug, let alone whether there's an actual or planned fix. It does seem like it should be working. It's weird that turning on the projector Bo rks audio. Does this help? However since for him the HDMI-attached device never disappears maybe because his TV does have stereo audio, unlike my projector , his fix doesn't help.
I had tried something similar by defining a new aggregate device with various audio mode combinations; stereo, PCM etc. Quote: I wish you lived near me, I have some testing equipment that would be interesting to use to see what was going on. Out of curiosity, what test equipment were you thinking of? You shouldn't have to goto such extremes thought. They're very much oriented towards video issues, not audio, and get very mixed reviews.
Very uncommon, so also no support to speak of. Such a box might be useful for debugging, but I can't believe it'll be reliable as a long-term solution, even if I can get it to work.
audio - HDMI sound output mysteriously no longer works in Mac OS X (Yosemite) - Super User
Sorry to resurrect this thread, but I have the exact same problem. I get sound when the projector is not attached to the amplifier, but when I connect it, I lose the ability to choose the sound output to the amplifier. In It should be easy enough to override, the question is what should be put into the data field to get it working properly. I looked into the issue. I recorded my EDID data with the projector attached and without using ioreg -l. Here's the raw data from with audio and without audio.
I then used this EDID decoding tool to check what is inside. I considered writing my own parser from the spec, but why would I when it's been done already. I got the following output with audio: div' ;q. Detailed block string not properly terminated And without audio: div' ;q. Detailed block string not properly terminated Spoilered for long descriptions. It should not be terribly hard to override. I'll have to look into how to write my own override plist, but it does not seem to be too hard.
I will report on any progress, but for now I have not got it to work. You might want to see if you can contact hk Support and tell them that's a bug in their firmware. It seems like that flag should be set in both scenarios. Adding just the Basic Audio Support did not seem to be enough. I did get the override to work, at least partly, but still no audio option in the menu. Also, the Speaker Allocation Block is missing, the hex data for it would be 4F 00 00 66 in the audio scenario, but I'm unsure where I could put it. I don't seem to have any empty parts where I could cram it in easily.
Also, the block is optional, so I'm not sure if it should have any effect in this case. Any ideas? Could you use some fresh eyes and check the above EDID data for any other differences that could be important? I have an almost identical setup, except with a Pioneer receiver. My receiver has an option in the setup to disable HDMI audio going past the receiver.
I have an Epson ube which does have speakers, and that's how I prevent the audio chain from seeing them. It's hard enough getting drivers on PC's to work correctly true 24p for example but at least on PC's you have that option at all. I also have a Denon AVR in my living room and it has no problems connecting to my mac. It used to work in Mavericks mostly, except when HDCP didn't want to cooperate but now, when I select the receiver as an audio destination, coreaudio crashes and no sound of course.
I can't offer any solution but will describe my case as data point. Different case from wavelet and tstm. Now whenever I turn my projector off, the audio stop playing through the AV amp. It plays through internal speaker.
Connect to HDMI from your Mac
But after a couple seconds, it goes back to AV amp. I think the AV processor signals back that the output is turned off, then realize the power amp is still on and signals back that audio is alive. Not a big problem, just a little bit annoying. Basically, running everything over a single HDMI cable to my Yamaha amp worked great, until I powered on or off different components, such as my TV, additional speakers, etc. I beat my head against the EDID wall for a couple of weeks, constantly having to re-create settings on the Mac whenever I dared to change the power status of any of my devices — obviously not ideal.
It is greyed out. Any idea? That explains why the 5. You cannot get extra 4 speakers out of 2 channels. But the reason why your box refuses to enable multi-channel setup is beyond me. I would debug the particular HDMI-input with some other device to make sure it functions properly, but I really have no clue what's going on there. In following your steps, I get the 8-channel option, and the speaker test tones work correctly; however, the actual audio playback is only stereo this happens even with an HD local movie via Quicktime, and an HD movie via Netflix.
I assume that's because the Samsung TV only has two speakers? In other words, the only way it may be possible is to get the Mac Mini to actually recognize the Yamaha. Any thoughts on that? Comment 1.
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I did a test with a QuickTime file which has 5. Not all of them have 5. The bottom line is: no issues.
The sound does work as expected. I even physically disconnected my front left and right channels so, that I can confirm the quality of the sound from other channels. Still, it works like a dream. Did you confirm your audio setup on Yamaha end? Thanks for this. Now, though, I'm not sure if the following happened because I unplugged the HDMI cord and changed it to a different port or if the receiver cycles the settings every time it is shut off. Anyways, the stutter returned and I had to repeat the steps here, but viola, all was well again.
I'll report back if it was the HDMI port change or the receiver shutting off. Hopefully the former, so that I don't have to mess with these settings every time the receiver gets turned off and on. Comments 4. What you're describing is pretty much how the HDMI-output works for me. It is quite unstable and behavior cannot be easily reproduced.
Anyway, hopefully your sound works properly from now on. I tweeted to Yamaha Hub this page and suggesting that they need to roll out a firmware update to address the problem. Might be worth tossing out a tweet too. Don't know how seriously they look into stuff though. Do you have an URL to the tweet? I'm not sure why it works, but it does.
I have a mac mini , Yamaha receiver, samsung tv. In step one I assume this is in System Preferences? I have selected outputs as Samsung. In step 2, in audi midi setup it shows the source as Samsung. I only have drop down for 2 ch 24 bit, 20 bit or 16 bit. There is no drop down for 8 or 6 channels.
And nothing about encoded digital output. Yes, the sound-settings are in System Preferences. You are 2nd person to comment, that the multi-channel selection is not available. However, like I wrote in my post, I cannot even retrace my own steps. I cannot get the sound setup broken anymore, it is only in the working mode. It looks like the Mac has a life of its own and user's wishes have very little to do with that. Yes, I have a similar problem to other commenters here. It's pretty crappy, to have to buy an external sound card with optical out to pass it to the amp.
Can anyone else confirm my suspicion that this might be a driver problem, if so, how can it be fixed. I didn't found anything else related to this, but it's the most logical guess. You didn't mention anything about your amp. Does your amp have any HDMi-settings in it? Now I'm confused. Your amp is connected via an optical cable to your TV? How does the picture go? Via HDMi? Shouldn't you try simplifying your setup? I might've expressed myself bad. So, I have the following connections: 1.
PS4 - optical - AMP 2. Thanks for the clarification. Now I understand your setup. In my opinion you're pushing the envelope here. Now that Mac is notoriously difficult to setup into multi-channel and given your complex cabling, unfortunately you're on your own there. This is the part where you break the envelope and wings start to tear off. What I'd recommend is to look for a new amp what would simplify your setup a lot.
Hello I cant seem to locate the Audio Devices panel you're showing on this how-to the only panel I can locate that is the same is the Sound panel please help Comment 1. Not "Audio Devices". Hi, Thanks for the good post to solve the problem. I just bought EOL mini couple of days ago and I was very disappointed when noticed that multichannel sound is not working. Setup is Denon X, mini, and Optoma projector.
All connected with HDMI. Mini - Denon - Optoma. I have exact same issue you had the solving goes exact same way except my setup is not yet working correctly. I changed it back 8chbit integer and I am able to get the test sound from speaker configuration for each speaker correctly. I finally downloaded VLC and 7. It works fine.
All channels are working correctly. At least some hope for this setup to serve as media server. Hi, I have the exact same setup. The new mac mini connected to my YamahaRx-V receiver that is connected to my samsung tv. But when playing something that is 5. Any help? Comments 2. As I tried to say in my blog post, that I cannot make my Mac Mini 5. It seems to live a life of its own and nobody knows the rules. I see I'm so disappointed with this One last doubt.