Mac mini 2014 won't do 5.1 surround sound from HDMI port

I can't seem to get my Mac mini 2014 to do 5.1 surround sound from the built-in HDMI port to my home theatre system. When I run the Audio MIDI Setup program the only option is 2ch-24bit (stereo). Now I didn't have this issue when I tested it with a Mac mini 2012 running 10.9.5. It allow me to select 6ch-24bit (5.1) and Encoded Digital Audio. I also don't have an issue with the Mac mini 2014 if I use a Belkin Mini DisplayPort to HDMI Adapter connected to one of the Thunderbolt 2 ports. It does 5.1 surround sound just fine. So is there something wrong with the built-in HDMI port on the Mac mini 2014 or OS X 10.10?

Hello mrbraindead,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I understand you are having problems with your VLC audio since updating to Windows 8.1. I am providing you with a link to a thread I found on en.Kioskea.net titled VLC video player suddenly has no sound. There are numerous solutions provided here which is why I am providing you with the link. I would review the posters solutions and ensure that you have checked all the suggestions they make.
Please re-post if you require additional support. Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
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Mac Mini (2014) won't wake up monitors (HDMI)

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AC Power -1*
Currently in use:
standby              1
Sleep On Power Button 1
womp                 1
autorestart          1
hibernatefile        /var/vm/sleepimage
darkwakes            1
gpuswitch            2
networkoversleep     0
disksleep            10
sleep                15
autopoweroffdelay    14400
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autopoweroff         1
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standbydelay         10800
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Assertion status system-wide:
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Hello maestrivo,
After reviewing your post, I have located an article that can help with external displays. It contains a number of troubleshooting steps and helpful advice for the issue you are experiencing:
Apple computers: Troubleshooting issues with video on internal or external displays
Thank you for contributing to Apple Support Communities.
Cheers,
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Well, I think I've tried everything...
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Go to: Applications > Utilities > Audio MIDI Setup > Output, can you see and select it from there?
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Hello
Hello i have mac mini 2014
its connected to the samsung smart tv by hdmi (i tested 2 of them)
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http://osxdaily.com/2014/01/04/fix-flickering-screen-external-display-mac/
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i see lots of people have this problem (flickering, no hdmi signal, loong boot) its the same problem i think
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btw warranty on my country its bad idea

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I am having this problem still, even after updating with the latest combo. I find that my Macbook Pro (using 10.8.5) will show the beach ball spinning with a black screen. I have to restart the laptop in order to clear this problem. Very annoying since this can happen two or three times a day.
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Mac Mini 2014 Oct cannot wake up after sleep

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MacBook Pro (Retina, Mid 2012 and later)
MacBook Air (Mid 2012 and later)
iMac (Late 2012 and later)
Mac mini (Late 2012 and later)
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sudo pmset -a autopoweroffdelay 86400
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If you unpair your BT KB and mouse from the old computer they should pair during the initial setup of the Mini. However, sometimes they donot a wired KB and mouse is required. You can use any USB PC KB and mouse.
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ty for read...

Try installing and using one of these apps
SwitchResX – The Most Versatile Tool For Controlling Screen Resolutions On Your Mac
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Regards

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Maybe VGA would be better. I would first try:
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Mac mini 2014 won't do 5.1 surround sound from HDMI port

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