I have lubuntu 20.04 installed on my machine. Everything was working fine for a couple of months. Everything was working fine until today when I've disconnected the bluetooth speaker from it. This is the first time I pair a bluetooth device with it. Now I cannot hear sound from my headphones (connected to the front or back sound panel). I've looked through the mixer configuration and the headphones are recognized, not muted, and the program (e.g. opera) is directed to play the sound there. Do you have any idea what might prevent from the sound playing there?
Bonus question, when I hit F3/F4/F5 in alsamixer in terminal the program quites instead of switching between the playback/input/all options.
I've looked again in alsamixer, the soundcard was muted (
MM). Is there a way for me to prevent this automute?