Нет звука после обновления на kubuntu 20.10

Solution:

1. Find the name of audio card by:

$ cat /proc/asound/card0/codec* | grep Codec

2. After the last line, add a new line. This line let the laptop to recognize the audio card.

$ sudo vim /etc/modprobe.d/alsa-base.conf

My audio card name is: ALC892

options snd-hda-intel model=ALC892

Then reload:

$ sudo alsa force-reload

Next, enter command:

$ alsamixer

In the open window: turn on the option «HP/Speaker Auto Detect»

Note: after the above steps, you can also try to reboot your computer. Sometime it does the trick.

note 2:

$ pactl load-module module-detect

the missing built-in Audio Analog Stereo suddenly appeared in the sound settings menu. As I chose it, I was able to hear the sound.

If you want this setting permanent, add the line:

load-module module-detect

to the default modules in /etc/pulse/default.pa