DTS sound Passtrough not working

I have the raspberry connected via HDMI to my TV and the TV is connected to the receiver. cause

I have enabled Passtrough and DD5.1 and DTS.
But a movie with DTS has no sound.

The receiver shows no input.

What can cause this problem?

I am running Kodi 17 RC 3

Gesendet von meinem Google Pixel