LGCX77 and Arc - connection issues

Hi All, my set up is as follows:

PC connected to TV (LG CX 77”) via HDMI and TV connected to Arc (eArc port via my own HDMI cable as the supplied cable did not work). The Sonos Ones are set up as surrounds. The issues are:

  • when I switch between the phone App and the TV / PC controls - there is no sound. it seems there is a handshake issue and I have to switch the TV off and on for it to work.
  • sometimes, when I turn on the TV, I get a weird noise from the Arc and have to switch TV off and on for it to work.
  • the surrounds do not work even when ‘Audio In’ for the Arc within ‘About my system’ says ‘Dolby Multichannel PCM 5.1’. am not sure why.
Please help / advise.

thanks a lot !

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