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There is no audio output from my earphone that is connected to the monitor. I tested the earphone with another laptop and it is working fine.

I tried the following solution from similar questions but the issue still persist:

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killall pulseaudio; rm -r ~/.config/pulse/*

It returned 21 but sound is still unavailable.

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killall pulseaudio; rm -r ~/.config/pulse/*

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rm -r ~/.config/pulse/
reboot
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sudo apt-get remove --purge alsa-base
    
sudo apt-get remove --purge pulseaudio
    
sudo apt-get install alsa-base
    
sudo apt-get install pulseaudio
    
sudo alsa force-reload
  1. sudo alsamixer Then F6 to select sound card and change the setting then reboot.

The Playback and Output Devices of pavucontrol both are using HDMI/Display Port 2 and the audio bar is fluctuating since I have YouTube running but no audio output at all. The following is the snapshot of my pavucontrol:

pavucontrol snapshot

enter image description here

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have you tried,

sudo alsamixer

and then unmute (Press m and up arrow to increase volume) the necessary things and reboot.

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  • Yes, I did that too. F6 to select sound card and change the setting then reboot. – jwen Jul 26 '20 at 12:34

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