I recently tested HDR playback on a Lenovo M710q (HDMI to TV). I turned on deep color on my HDMI port (3). Started with LibreElec and all HDR content look dark/washed out. I cant find any settings for HDR. So I tried Kodi 17.6 from W10. Ran dxdiag:
Color Space: DXGI_COLOR_SPACE_RGB_FULL_G22_NONE_P709, that indicates this is sRGB and not advanced color.
So it appears the GPU chipset (Intel 630) supports HDR10.
I looked up the chipset
It appears to state HDMI 1.4. Could that be the problem? Do I need native HDMI 2.0? As indicated here:
Updated BIOS to latest
Updated GPU drivers to latest.
Windows 10 (1709)