Sound Bar Not Working

I had many problems synchronizing my sound system since I bought an LG Soundbar for my PC (Windows 11).

I finally solved the issue. The BK 929 U device was not the problem. The problem was my Samsung Monitor. 

In the Monitor Menu, from the monitor itself, I discovered that if I toggle/switch the "Display Port Version" from 1.1 to 1.2, suddenly the monitor queries windows, gets a new device ID, EDID, and BANG! 

Suddenly the sounds pipes through ALL THE WAY!

I would have never guessed this, but something deep in my technical brain, combined with all your advice at OREI, I decided to flip that menu item on the monitor.

The OREI BK 929 U splitter was innocent — it was the Samsung monitor’s DisplayPort connection that had stopped completing the EDID/HDMI-audio handshake with Windows.

Flipping DisplayPort Version forces the monitor to disconnect and renegotiate with Windows. Windows then receives a fresh EDID, redetects the audio-capable display path, and restores sound through the OREI to your S55TR soundbar.

That explains the whole pattern:

• Picture could remain perfectly normal. 
• The soundbar and cabling could be working. 
• Windows could suddenly “lose” the audio destination. 
• Changing an apparently unrelated monitor setting immediately restored it. 

So the reliable fix is now:

Samsung monitor menu → DisplayPort Version → switch versions → wait for Windows to redetect → reselect the output device if necessary.

I found a manual EDID reset switch hidden inside the monitor menu.