Audio will not be routed to the headphones at all if the machine boots with the headphones plugged in

[Seija K.]

Whenever I boot up my laptop with headphones already plugged in via the headphone jack, and attempt to play audio, no audio will play, even though the volume is up. I have to unplug my headphones and plug it back in for the audio to play to my headphones.

Steps to Reproduce:
1. With the machine powered off, plug in headphones into the audio jack
2. Power on the machine and log in
3. Open Audacity, or (in my case), open up a YouTube video and turn up the sound
4. Notice no audio plays

Expected Results:
Audio plays through the headphones without issue

Actual Results:
No audio plays at all.

This bug is present in 18.04.4, 19.10, AND the current beta of 20.04

Description: Ubuntu 18.04.4 LTS
Release: 18.04

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-5.3.0-45-generic 5.3.0-45.37~18.04.1
ProcVersionSignature: Ubuntu 5.3.0-45.37~18.04.1-generic 5.3.18
Uname: Linux 5.3.0-45-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.14
Architecture: amd64
Date: Sun Apr 5 13:15:00 2020
InstallationDate: Installed on 2020-04-04 (1 days ago)
InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install)