Passthrough audio not available / Grayed out S95D

[Jrow1]

Hey, 

so I’m using the S95D since a couple of months with a Sonos surround setup connected via eARC. Everything worked perfectly until I recently saw that the passthrough audio isn’t selected anymore in the sound settings and isn’t available anymore either (it’s grayed out now). Only auto and pcm are available now. 

Has anyone experienced something similar and found a solution? 

[Smithian]

No change here either. Some of the HD digital channels are fine with strong volume while others are faint. The same with different streaming services. So, I think it's probably an audio coded issue. 

I usually turn the sound bar off these days. A waste of good money. Sorry there isn't better new. Have a good one.

[Jrow1]

I'm wondering if I've simply misunderstood the function? If the sound comes from the PS5 (also connected to the tv via hdmi), then pass-through is actually available 😅 I always thought that the audio signal from the TV itself can also be passed through to get like the „pure“ audio signal to the Sonos soundbar? But maybe I just haven't understood something fundamental.
When I use apps on the TV such as Netflix, Prime Video, Disney or YouTube, pass-through is not available in any case. Guess I have to further investigate 😅