Ubuntu 20.04 sound bug

Sound configuration

I’m using ubuntu 20.04 with the last update. Ubuntu detect the ouput line (is the integrated sound card) and every 1ms (more and less) it detects that I plug a analogic headset and then detects that I unplug the headset but I’m only using the back side jack connector. I try to reinstall the drivers but it did not works. This problem make that sometimes the output drive change to hdmi output and I should change back to jack output…

Sorry about my painful english.