agree that your audio device settings are worth looking at. My Marantz NR1711 is rather quirky in its menu configuration for Atmos. I have a 4.0 speaker set-up and Atmos will show if I set the sound mode correctly, but the options available for the sound mode depend on whether speaker virtualisation is enabled, and it’s possible to seemingly lose the option entirely and get stuck in TrueHD mode.
Here’s an example of an Atmos feed from the Vero with the Atmos option available in the movie sound mode.
Now, while in this mode, if I go to the surround set up and disable speaker virtualisation, the sound mode menu changes to the following - note that the Atmos option is now gone. It turns that if, at this point, you select regular TrueHD as the sound mode, then the speaker virtualisation option disappears from the surround parameter config menu. So at this point it’s easy to be stuck with apparently no way back to Atmos, since the only way to recover the speaker virtualization option is to set the sound mode to TrueHD + DSur, go to the surround configuration and enable speaker virtualisation, then when you come back to the sound modes Atmos will be available again as an option and you’ll see Atmos in the AVR display. Why on earth anyone would design it this way is beyond me.
