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MasterTroll
Avid Contributor I
November 15, 2023
Answered

Sonos Beam Gen 2 issue with LG C9 running direct from Laptop using Dolby Atmos

Audio is cutting out like a blip, not completely silent. Just enough to be annoying. I’ve tried resetting the beam. Changing out all the HDMIs. Media PC set to Dolby Atmos for home theater in Windows 11. Shows Atmos in the app. Not sure what to do at this point .

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GuitarSuperstarAnswer
Lead Maestro
November 15, 2023

Be sure to set your TV to these settings (if available):

HDMI Input Audio Format: Bitstream
Digital Sound Output: Pass Through
eARC Support: On

And use the HDMI cable that came with the Beam.

Also try disconnecting everything from the TV and unplug the Beam and TV from power for a couple of minutes. Plug everything back in but keep everything disconnected. Run TV Setup in the Sonos app and follow the app instructions. When the app instructs you, connect the Beam to the TV’s HDMI ARC/eARC port using the Sonos-supplied HDMI cable. After the Beam has been successfully connected, connect the laptop to the TV.

"Receive with simplicity everything that happens to you." - Rashi
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2 replies

GuitarSuperstarAnswer
Lead Maestro
November 15, 2023

Be sure to set your TV to these settings (if available):

HDMI Input Audio Format: Bitstream
Digital Sound Output: Pass Through
eARC Support: On

And use the HDMI cable that came with the Beam.

Also try disconnecting everything from the TV and unplug the Beam and TV from power for a couple of minutes. Plug everything back in but keep everything disconnected. Run TV Setup in the Sonos app and follow the app instructions. When the app instructs you, connect the Beam to the TV’s HDMI ARC/eARC port using the Sonos-supplied HDMI cable. After the Beam has been successfully connected, connect the laptop to the TV.

"Receive with simplicity everything that happens to you." - Rashi
    Ken_Griffiths
    Ken_Griffiths
    November 15, 2023

    A few suggestions for you to consider…

    If not done already…

    • Set the LG TV HDMI-eARC Digital Sound Out to ‘Pass-Through’? 
    • Set the input audio format to ‘Bitstream’?
    • Try switching off instant game response in the Picture Settings and perhaps try things with HDMI Ultra HD Deep Colour switched off too
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