I connected it directly to a B&O BeoVision Avant TV via HDMI.
The TV acts as selector/decoder/pre-amp and streams the audio signal to a few WiSA BeoLab active speakers.
Unfortunately the TV has no video mute function, so when I select Nucleus as the source there are always a few lines of text appear at the upper left corner of the TV screen. I think in time it will cause screen burn-in marks.
I am wondering if there is a way to optionally stop showing the texts either with current or future software version.
Welcome to the community! The Nucleus HDMI output will always show the setup text information including the current IP Address for diagnostics purposes and there is no way to hide this at the present time, although you can feel free to open up a feature request in the feature request section of this site.
As for an interim solution to this behavior, I would suggest adding an AV receiver or another type of bridge device that performs the WiSA output conversion and then using the TV as a Roon Display (Note: you may need to add a chromecast if the TV does not support a compatible web browser).
There are devices available from online sellers and auction sites that will spit digital audio from an hdmi output. Not expensive and may be worth trying.
You could separate the Server, aka Nucleus, from the TV and use another NUC running Windows to act as an endpoint, which would feed the TV’s HDMI and allow better control on the video side.
If I don’t send a black screen from Oppo to TV, then the TV screen saver comes on. Before the screen saver comes on, the TV displays album information from Roon.