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Intel NUC NUC6i7KYK, HDMI AUDIO cannot output 7.1 surround channel

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My system is Intel NUC NUC6i7KYK                                           

I connected the surround amplifier model Onkyo TZ-RZ830 (7.1.2 surround channel, HDMI 2.0)              

When I set the 7.1 surround channel, the sound only appears in the front 2 channels, the other channels are silent. 

Tone (including subwoofer and no sound)                                       

I use WIN10 1803 and WIN10 1809 new installation test have the same situation                    

(voice is transmitted as 2 Channel)                                         

                                                           

But I used another computer to test the new installation of WIN10 1809 (using NVIDIA HDMI)              

Set 7.1 surround channels, but all channel sounds can be heard                            

(voice is transmitted as Multi Channel)                                       

                                                           

I think this is a question about INTEL HDMI AUDIO DRIVER                               

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Moderator
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Hello LJoy, Thank you for your feedback. To address this issue, we recommend following these steps: 1. Update the HDMI* firmware: HDMI Firmware Update Tool for NUC6i7KYK https://downloadcenter.intel.com/download/26061/ Update guide https://www.intel.com/content/dam/support/us/en/documents/mini-pcs/nuc-kits/NUC6i7KYK-HDMI-Firmware-... 2. Check the Surround Sound Setup Guide for Intel® NUC. https://www.intel.com/content/dam/support/us/en/documents/boardsandkits/Configure-Surround-Sound.pdf If the issue is not resolved, run the Intel® System Support Utility and attach the report to this thread. 1.Download the Intel® System Support Utility and save the application to your system. https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility-for-Windows-?product=91... 2.Open the application and click Scan to see system and device information. The Intel® System Support Utility defaults to the Summary View on the output screen following the scan. Click the menu where it says summary to change to Detailed View. 3.To save your scan, click Next and click Save. You can save the file to any accessible location on your computer. Wanner G. Intel Customer Support Technician Under Contract to Intel Corporation

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Beginner
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I have tested the installation of the following drivers. The same situation (sound delivery is 2 Channel)

WIN10 initial installation driver

GFX_WIN10_64_24.20.100.6286_KY

Dch_win64_BETA_25.20.100.6448

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Beginner
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In order to find out the problem, I spent 2 days doing different system installations, and doing cross-checking with different NUCs.

                                                                              

Hardware                                                                            

  Amplifier equipment = Onkyo TX-SR606 / Onkyo TZ-RZ830

  PC device = ASRock ION 330 (Nvidia HDMI 1.3) / NUC NUC6i7KYK (Intel Hdmi 2.0)

  WINDOWS = WIN10 1803 / WIN10 1809

                                                                              

Test Benchmark HDMI AUDIO 7.1 Transmission Multi Channel Sound

                                                                              

Test Results                                                                          

  ASRock ION 330 + TX-SR606 + Win 1803 ==> OK

  ASRock ION 330 + TX-SR606 + Win 1809 ==> OK

  ASRock ION 330 + TZ-RZ830 + Win 1803 ==> OK

  ASRock ION 330 + TZ-RZ830 + Win 1809 ==> OK

  NUC NUC6i7KYK + TX-SR606 + Win 1803 ==> Fail

  NUC NUC6i7KYK + TX-SR606 + Win 1809 ==> Fail

  NUC NUC6i7KYK + TZ-RZ830 + Win 1803 ==> Fail

  NUC NUC6i7KYK + TZ-RZ830 + Win 1809 ==> Fail

  The reason for the failure is that there is only 2 channels of sound (2 Ch) ​​passed to the amplifier, and the remaining 6 channels have no sound at all.

                                                                              

This is very unsatisfactory for the main control computer used in the family living room. I certainly know what caused it.

The answer is that the Intel HDMI Audio Driver is not written. When the user is set to 7.1,

The channel still uses the preset stereo mode to pass

                                                                              

This may be a versatile issue for Intel HDMI Audio, I believe Nvidia or AMD's HDMI

No problem, I plan to sell my NUC NUC6i7K and switch to another HDMI Audio (which costs me $700 more)

                                                                              

Test film

  Please switch to 4 channels or more. If you switch stereo, you will still hear all the sounds (because WINDOWS will automatically convert)

  Protplayer, Please select passthrough mode

                                                                              

  https://www.demo-world.eu/download-2d-trailers/?file=dolby_natures_fury_lossless-DWEU.mkv&pic=dolby_...

  Dolby_natures_fury_lossless-DWEU.mkv

  You have to hear the details of the sound that the ball rolls to the back, which is completely inaudible in Intel HDMI Audio.

 

https://www.demo-world.eu/download-2d-trailers/?file=dts_sound_unbound_callout_11.1_lossless-DWEU.mk...

  dts_sound_unbound_callout_11.1_lossless-DWEU.mkv

  You have to hear all the corresponding speakers, but only the first 2 speakers, the other sounds are gone.

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Beginner
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Can anyone help forward this article to the Intel driver opener, changing the 2 channel to the multi-channel setting?

It should take some time, this is a problem with Intel HDMI Audio, but for a home theater PC,

This is a very important feature, thank you very much for your assistance.

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Highlighted
Moderator
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Hello LJoy, Thank you for your feedback. To address this issue, we recommend following these steps: 1. Update the HDMI* firmware: HDMI Firmware Update Tool for NUC6i7KYK https://downloadcenter.intel.com/download/26061/ Update guide https://www.intel.com/content/dam/support/us/en/documents/mini-pcs/nuc-kits/NUC6i7KYK-HDMI-Firmware-... 2. Check the Surround Sound Setup Guide for Intel® NUC. https://www.intel.com/content/dam/support/us/en/documents/boardsandkits/Configure-Surround-Sound.pdf If the issue is not resolved, run the Intel® System Support Utility and attach the report to this thread. 1.Download the Intel® System Support Utility and save the application to your system. https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility-for-Windows-?product=91... 2.Open the application and click Scan to see system and device information. The Intel® System Support Utility defaults to the Summary View on the output screen following the scan. Click the menu where it says summary to change to Detailed View. 3.To save your scan, click Next and click Save. You can save the file to any accessible location on your computer. Wanner G. Intel Customer Support Technician Under Contract to Intel Corporation

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Beginner
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Thank you very much for the assistance of Wanner.Intel. After the firmware update, you can correctly hear all the channels (7.1).

Sound, thank you for your help

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