How to get audio output on Ubuntu - speakers silent?

[Liam Proven]

On Sun, 21 Feb 2021 at 22:49, Bo Berglund <bo.berglund at gmail.com> wrote:
>
> Now I also fired up another HP notebook this time an 8560w, on which I had
> already installed Ubuntu Mate 20.04 LTS.
>
> Exactly the same problem on this notebook too, disabled audio.

Is it exactly the same problem, though? How do you know?

Bo, I saw you posting recently over on the FreePascal mailing lists.
You do not seem to be a beginner or a newbie!

You must know that we will need a lot more information than this to
try to diagnose anything!

[...]
> Both of these were manufactured about 10 years ago.

Have you checked that their firmware is current, as I suggested?

Information you have not told us yet:

• What sound chips do they have?
• Are both laptops using the same sound chip?
• Is it being correctly detected by Linux?
• What sound output device does Linux say it is using?
• Can you change the output device in the audio mixer?
• Does the sound work immediately after a reboot?
• Does the sound work with a guest account?
• Does the sound work if you use a bootable USB with a different
distro? (E.g. openSUSE or Fedora)
• Have you tried with different programs, e.g. a local MP3 file just
via the default media player?

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