I’m just about pulling my hair out with my Sonos and 77C14.
I have a Playbase, two One’s and a 3rd Gen Sub running off Optical Out. Always works, never a problem until today. Nothing from any source will play in 5.1, says Stero/PCM in the Sonos App. Tried my Sky Q box, ATV 4K, and even the on TV streaming with the TV displaying that the output is in the correct DD 5.1 or Atmos etc.
Tried different HDMI cases, just in case, tried a different Optical cable, still the problem persists. Read 1000 different solution and tried everything I can find/think of.
Anyone have a clue please as it’s doing my head in.