I've done instructions on #3, but that did not solve the problem. My computer is a Dell Inspiron 14 3480 with latest Ubuntu 20.04.3 ~$ cat /proc/asound/card0/codec* | grep Codec Codec: Realtek ALC3204 Codec: Intel Kabylake HDMI
I've done instructions on #3, but that did not solve the problem. My computer is a Dell Inspiron 14 3480 with latest Ubuntu 20.04.3 card0/codec* | grep Codec
~$ cat /proc/asound/
Codec: Realtek ALC3204
Codec: Intel Kabylake HDMI