I have a Sonos Arc connected to an LG CX TV and the two devices aren’t working well together when eARC is enabled. After much, much research into the topic online it appears to be an issue with the Sonos Arc and newer Samsung TV’s too. It appears the implementation of eARC by Sonos and the higher end TV manufacturers attempting to implement eARC is not going so well. I would encourage Sonos to work with LG and Samsung to get this figured out as consumers are spending a lot of money on this high-end equipment and deserve a better experience.
Best answer by MakeItSoView original