Nice, commenting both lines worked for me.
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https://bugs.launchpad.net/bugs/1850887
Title:
Audio / Sound reverts to HDMI when power event occurs
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I have an HP laptop and, indeed, the volume steps are so large that
after I've decreased the volume just 3 or 4 clicks from maximum, I can
no longer hear anything. The weird thing is that even though I can't
hear anything and I can see that the Master volume in alsamixer is zero,
the volume
