I am on Ubuntu 20.04.

I have a monitor connected to audio, via HDMI.

If I change the volume using the slider bar, I can hear a beep from the speakers, but nothing happens if I play youtube or classicfm from Chrome.

If I plug in headphones, it starts to play youtube through the headphones. I can then change the sound settings to HDMI, and it will play sound via my monitor's speakers. However, if I remove the headphones from the audio jack, the sound will stop coming out of my monitor.

Why is my computer being so confusing?

I tried pulseaudio -k to restart it. But that did not help.

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