Ubuntu 20.04: No sound

[Ralf Mardorf]

Hi Volker,

Volker Wysk wrote:
>Now, sound doesn't work in the laptop.
^^^^
Since it worked before, it's unlikely related to a fishy BIOS, hence
refrain from updating the BIOS. Never change a winning team! BIOS
upgrades are only recommended, if something needs to get fixed. If
everything worked with this BIOS before upgrading Ubuntu, you only risk
to suffer from a regression, rendering your machine useless, if you
update the BIOS.

>I've examined the BIOS. There aren't many settings there. There isn't
>anything about sound.

A BIOS that doesn't allow to disable onboard audio is quite unusual.
However, if you didn't disable it, you anyway don't need to enable it.

Post the output of the following commands:

  aplay -l
  lsmod | grep snd
  grep snd /etc/modprobe.d/blacklist*
  hwinfo --sound

You might need to install the package hwinfo from the universe
repository first or run

  lshw -class sound

since you anyway should run lsmod, the additional information regarding
the driver, provided by hwinfo is not that important.

Regards,
Ralf

-- 
Status of my current audio and graphics workstation:
https://i.imgur.com/mdf7fOW.jpg