I had kubuntu un my Acer TravelMate B117-M laptop. The audio stopped working and I couldn't fix it. After some months I switched to ubuntu 22.04. Still no audio.
I asked the same question and it didn't work: No audio Ubuntu 22.04
I tried following many threads, like this one Only dummy audio on laptop when updating from Ubuntu 22.04 to 22.10 or this one No Audio Ubuntu 22.10
I reinstalled pulseaudio. Still no audio.
If I use an external speaker or headphones I can hear everything. Any suggestion?