I had the same issue as everyone else here: plugged-in headphones would only work if there were plugged-in when the computer booted. If plugged they would not be detected again until after a restart.
What worked for me:
- Go to "Settings"
- Go to "Apps"
- Go to "Startup"
- Turn ON Waves MaxxAudio Service Application
- Restart your computer and plug/unplug/re-plug your headphones: everything should work now.
I don't have the MaxxAudio Service - and after reading its reviews and seeing how often people complain about it slowing everything down, not sure I want to install it. I'll be curious to know if others have good results with this?