Roku 4K Streaming Stick 3820 doesn't deliver 3.1 audio, only 2.1
I recently added a Roku 4K Streaming Stick 3820 to my LG OLED C4 TV with Samsung 3.1 Soundbar, so that I could stream Kanopy. (Kanopy unfortunately isn't embedded in LG TV's.)
The 3.1 Soundbar works fine with live TV or LG embedded apps like Netflix and Disney+. But when I stream anything from the Roku 4K Streaming Stick, all I get is 2.1 sound (the centre speaker doesn't work).
I have tried all the Roku Settings/Audio/Digital Output Format, including Auto and Custom (and under Custom, including Dolby Digital, Dolby Digital Plus and DTS). Nothing changes.
