X, I really sorry for all the inconvenience you had been having with this NUC.
HDMI audio drivers are included with the graphics driver available for your NUC. You will be able to find the latest version at this link:
In addition to that, it is important to use straight connection and the HDMI cable has to be 1.4a.
Please check the following pictures and let me know if you are able to find the speaker configuration shows at Pic#2.
You can get additional troubleshooting on the following thread https://communities.intel.com/thread/47417
Why does it have to be HDMI 1.4a?
HDMI 1.3 supports multichannel audio...
It is necessary to meet with the requirements for the port which in this case the cable needs to be 1.4a.
But all HDMI standards (and thereby ports) from 2.0 and down, is backward compatible... So it doesn't make any sense to me...
What is it in the NUC that MUST HAVE HDMI 1.4a standard?
Dolby Digital 5.1 and DTS 5.1 has been supported since the introduction of HDMI 1.0, so why does the NUC require HDMI 1.4a standard cables?
Does that mean that the surround receiver must also support the HDMI 1.4a standard? That's ******** if that's the case... You haven't written that anywhere...
Please clarify these questions
I know that you can't get the functions that require a HDMI 1.4a cable with a HDMI 1.3 cable, but that's not what I'm saying... What I'm saying is that Dolby Digital 5.1 and DTS 5.1 has been supported since the introduction of HDMI 1.0, and therefore doesn't require HDMI 1.4a cables or ports to transfer the bitstream.
I've copy/pasted the functions included in the different HDMI versions from Wikipedia so you can see what I mean:
HDMI version 1.0 1.1 1.2
2.0 sRGB Yes Yes Yes Yes Yes Yes YCbCr 4:2:2/4:4:4 Yes Yes Yes Yes Yes Yes 8 channel LPCM, 192 kHz, 24-bit audio capability Yes Yes Yes Yes Yes Yes Blu-ray Disc and HD DVD video and audio at full resolution[a] Yes Yes Yes Yes Yes Yes Consumer Electronic Control (CEC)[b] Yes Yes Yes Yes Yes Yes DVD-Audio support No Yes Yes Yes Yes Yes Super Audio CD (DSD) support[c] No No Yes Yes Yes Yes Deep color No No No Yes Yes Yes xvYCC No No No Yes Yes Yes Auto lip-sync No No No Yes Yes Yes Dolby TrueHD bitstream capable No No No Yes Yes Yes DTS-HD Master Audio bitstream capable No No No Yes Yes Yes Updated list of CEC commands[d] No No No Yes Yes Yes 3D over HDMI No No No No Yes Yes Ethernet channel No No No No Yes Yes Audio return channel (ARC) No No No No Yes Yes 4K resolution support at 30 fps No No No No Yes Yes 4K resolution support at 60 fps No No No No No Yes Rec. 2020 color space support No No No No No Yes YCbCr 4:2:0 support No No No No No Yes 32 channel audio support No No No No No Yes 1536 kHz audio support No No No No No Yes 4 audio streams support No No No No No Yes 2 video streams support (Dual View) No No No No No Yes 21:9 aspect ratio support No No No No No Yes
So why do you insist that 5.1 audio is a HDMI 1.4a and above exclusive feature, when it's simply not the case?
If the user WANTS to use the features exclusive to HDMI 1.4a, then a HDMI 1.4a cable is of course required, but that's not the case here... "x t" who started this thread asks about simple 5.1 audio, which again is supported from HDMI 1.0 and up, so therefore any HDMI cable should work... Why is that not the case with a Intel NUC?