I have SMART SDR loaded on my Surface PRO 3. Works great. Today, I just wanted to listen to a YOU TUBE video with earphones. Plugged in the earphones, Picked them in the Playback list, and everything was fine.
When I disconnected the earphones, and went back to turn on the internal speaker. NO speaker choice was present. JUST LOTS of DAX options. NO Speaker or even earphones.
Removed SMART SDR and DAX, and my speaker and earphone options came back.
I had this same kind of issue before when we were installing FUSION Wires-X software on a PC. The Wires-X software could not “see” the box connected via USB because of all the DAX settings. We removed SMART SDR and DAX on that PC, and Wires-X software found the box.
Got to be a way to prevent DAX from sucking up all the sound ports.