Not getting much joy of there.

But I have just carried out a successful exercise. I cloned my current 2Tb drive from a 1Tb that I was using a couple of months ago. I've just put that 1Tb in and, with wireless switch off, booted up.

Play some music, comes out of internal speaker. Still playing the music and plug headphones in, music comes out of headphones, take headphones out music comes out of internal speaker. Repeat just to check.

So my ~ March 18.04 works and something now doesn't.

Is there anything I can compare/copy over?

If it is an update bug surely someone should be advised?