Affected : intel NUC6CAYH
Expected behavior :
HDMI audio output to 4k TV via HDMI 2.0 port.
Observed behavior :
Librelec 8.02 : No HDMI audio at any resolution. Sound works through Ear phone jack.
Xubuntu 17.04 (Kernel 4.10x) : No HDMI audio at any resolution. Sound works through Ear phone jack.
Windows 10 (+/-Kodi 17.3) : No HDMI audio output at all resolutions. Sound works through Ear phone jack.
Actions :
Checked BIOS sound is set to 'ON' (it was).
Updated BIOS to latest AYAPLCEL.86A.0038 (Download HDMI 2.0 Firmware Update Tool for Intel® NUC Kit NUC7i3BN, NUC7i5BN, NUC7i7BN, NUC6CAY)
Updated Megachip HDMI Firmware to 1.66 via Windows only software (Download BIOS Update [AYAPLCEL.86A])
Repeat test observed behavior:
Librelec 8.02 : No HDMI audio at any resolution. Sound works through Ear phone jack.
Xubuntu 17.04 (Kernel 4.10x) : No HDMI audio at any resolution. Sound works through Ear phone jack.
Windows 10 (+/-Kodi 17.3) : HDMI audio output as expected at all resolutions. Sound works through Ear phone jack.
Reference:
MCDP28x0 DisplayPort1.2a-to-HDMI 2.0 Converter
MCDP28x0 DisplayPort1.2a-to-HDMI 2.0
NUC6CAYH Product Change – Up-to-date Firmware Out of the Box
NUC6CAYH Product Change – Up-to-date Firmware Out of the Box – The NUC Blog
PCN115449-00.pdf
Filed a bug at Linux DRI, sourly informed 'it works for everybody'.
Clearly it doesn't...Suggestions?
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