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This morning I had perfect sound on my PC. After confronting some issues (like setting my home folder on my HDD drive), sound had permanently turned to mute (I can't change it back), and my volume (+ and -) buttons don't work anymore.

Even when I'm trying to manually volume-up, it does nothing:

photo

When I return to this menu, it changes back to mute and 0% volume.

When I connect headphones the same thing happens.

Any suggestions?

edit: recent action was moving my home folder to my HDD drive from the SSD..

output for these commands:

and thanks for answering Z-S and David Foerster

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    Could you please go into some more detail about what you were doing that seems to have caused the problem?
    – Zanna ♦
    Sep 3, 2017 at 18:43
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    Could you please edit your question to include the output of the terminal commands lspci -nnk | grep -A3 Audio, aplay -l, and pactl list short sinks? Please also make sure that the relevant audio channels in alsamixer (terminal) or gnome-alsamixer (GUI) have their volume turned up and aren’t muted. Thanks.
    – David Foerster
    Sep 3, 2017 at 21:10

1 Answer 1

Reset to default
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This happened to me in 20.04 lts .The below fixed the problem for me

Permanent fix:

sudo apt install alsa-tools-gui then
Run hdajackretask and then
Parser hints > jack_detect = no
Apply now then and
Install boot override
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