[GrimGriefer]

Hi everyone,
I recently picked up an Intel NUC Kit NUC7i5BNK which has has the i5-7260U Processor and have been playing with it for a few days. It is connected to a UDH TV via an Onkyo amp which supports HDMI 2.0a & HDCP 2.2 and using a Grub2 bootloader I have installed Windows 10 Pro x64, LibreELEC (Krypton) v8.0.2 MR and the latest Milhouse LibreELEC build from here: http://milhouse.libreelec.tv/builds/master/Generic/).

Config is as follows:
Hard disk: Samsung MZVPV128HDGM M.2 NVME
Ram: Crucial 16GB DDR4 2133Mhz
Bios: v49
Windows GPU Driver: v15.46.2.4729
HDMI Patch: v1.66 patch

Here are my findings.

Windows 10
Has a very annoying issue at UHD where the screen flickers black for a second when navigating through different explorer windows.
The problem was present pre and post HDMI patch v1.66
I have tried different HiSpeed HDMI cables without success but if the resolution is set to 1920x1080 in Windows then the problem doesn't happen.
Almost as if the driver is crashing and recovering but nothing in event viewer points to any issues.


LibreELEC (Krypton) v8.0.2 MR
Resolution: 3840X2160P
Audio Output Device: ALSA: HDA INTEL PCH, ONK TX-NR646 ON DISPLAYPORT #0
Passthrough Output Device: ALSA: HDA INTEL PCH, ONK TX-NR646 ON DISPLAYPORT #0

H.264 (720p) - FF-H264-VAAPI HW
H.264 (1080p) - FF-H264-VAAPI HW
H.265 (720p) - FF-HEVC-VAAPI HW
H.265 (1080p) - FF-HEVC-VAAPI HW
H.265 (UHD) - FF-HEVC SW

AAC 5.1 - Working
Dolby Digital 5.1 bitstreaming - Working
Dolby TrueHD & Atmos bitstreaming - Not Working
DTS 5.1 bitstreaming - Working
DTS Master Audio & X bitstreaming - Not Working


LibreELEC (Milhouse)
Resolution: 3840X2160P
Audio Output Device: ALSA: HDA INTEL PCH, ONK TX-NR646 ON DISPLAYPORT #0
Passthrough Output Device: ALSA: HDA INTEL PCH, ONK TX-NR646 ON DISPLAYPORT #0

H.264 (720p) - FF-H264-VAAPI HW
H.264 (1080p) - FF-H264-VAAPI HW
H.265 (720p) - FF-HEVC-VAAPI HW
H.265 (1080p) - FF-HEVC-VAAPI HW
H.265 (UHD) - FF-HEVC-VAAPI HW

The following HEVC profiles were tested:
Main 10@L5@Main
Main 10@L5@High
Main [email protected]@high
Main [email protected]@high
Main [email protected]@High-BT.2020

All formats played back with hardware acceleration though one point of note was that the BT.2020 file did not trigger any form of HDR.

AAC 5.1 - Working
Dolby Digital 5.1 bitstreaming - Working
Dolby TrueHD & Atmos bitstreaming - Not Working
DTS 5.1 bitstreaming - Working
DTS Master Audio & X bitstreaming - Not Working


Maybe this is of use to someone.