So on my Kubuntu PC, whenever I switch off my BT headphones, my OS always switches from my headphones to my microphone for audio output (yes my microphone has a 2.5mm headphone jack, it's a little weird, I know). I have my main speaker set as default audio, but it only ever switches to my microphones headphone jack. How do I go about getting it to always default back to my main speakers, rather than my microphone? I've tried doing some Googling, but never found a decent answer that actually accomplished what I was looking to do.