Call me stupid, but why would you limit your devices when they are probably capable of doing full colors? Limiting the black colors will give you a washed up greyish layer over your display. I would disable the limitation and always go for full colors, on the htpc as well as the TV.
You may have to up the brightness/contrast on your TV, but in the end the colors come out better.
Because you do not want to scale the original limited color range of the source material if you are a hard core purists--losing BtB and WtW video signals. Another reason is if your common denominator needs to be limited when using an AV receiver and outputting to one input on the display.
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I upgraded my NUC from a Haswell (NUC5) to the new Kaby Lake (NUC7), mostly to get hardware 10bit HEVC at some point in the future. I restored my backup from the NUC5 to the NUC7 and validated all my settings. Unfortunately, I'm no longer able to bitstream lossless audio. Standard DD and DTS work fine, but TrueHD and DTS-HD generate no sound at all. My receiver acts as if no sound is being sent. If I disable the lossless options in settings, TrueHD seems to output as LPCM and DTS-HD downgrades to core, as expected.The only oddity I see that's obvious is that X seems to think it's on DP1 rather than HDMI1, but it looks like it considers them clones so maybe that's normal here. Also my xrandr output shows an incorrect "Broadcast RGB" setting, it should be forced to "Full" by autostart.sh. This was a previous Kodi best-practice for proper black levels (TV set to limited, X output set to full, Kodi set to limited), but perhaps 17+newer GPU has created some synergy here that I'm unaware of and "Video 16:235 pass-through" is expected now. I only mention it in case it's further indicative of some problem with the output device, the audio problem is the only thing I'm intending to report here.
System Details:
- NUC7i3BNK (i3-7100U, Intel HD Graphics 620)
- Using the HDMI output
- LibreELEC 7.95.2
Logs and whatnot:
- Debug log for attempted playback (DTS-HD, I can do TrueHD as well if you like): anKbafCM
- Audio/Video settings screenshots attached
- Mediainfo for file used on test: WkZKwXA5
- dmesg: ipAmGTqT
- lspci: quY8Fwy3
- lsusb: 8uCq4Qbv
- xrandr: xrandr - Pastebin.com
Let me know if there's anything else I can provide that would be helpful.Thanks!
Intel needs to update the drm-tip drivers from what I understand. 98797 – BXT - HDMI - HD audio passthrough dont work
I am quite confused with what changed with the latest NUCs starting with Skull Canyon when it comes to the different modes for xrandr Broadcast RGB. It seems as if though Video 16:235 passthrough no longer functions. I made this post over on the Plex forums covering this issue as well as any other issues for Apollo Lake and Kaby Lake NUCs