Intel VAAPI howto with Leia v18 nightly based on Ubuntu 18.04 server
You mention your projector is in "limited" mode. How are you doing this? Is there an auto option?

If you simply can't get your projector to accept a limited range signal correctly (and the same thing happens if you force the "Limited 16:235" option, which should result in your blacks being grey), then yes, use xrandr to manually set full mode, set Kodi to full with dithering, and then leave your projector on full. When you do this, you should only see greyshades between 16 and 235.

Messages In This Thread
RE: New Era: VAAPI with EGL interoperation - by Sunflux - 2015-10-09, 05:20
Live TV broken again? - by schamane - 2016-02-29, 19:56
Random crashes - by hal2100 - 2016-03-08, 22:03