Comment 9 for bug 1908167

Verify on Dell CID 202010-28345

1. boot into Ubuntu groovy
2. check sound settings
3. Input Device is empty
4. plug the headset
5. Input Device is still empty
6. enable proposed channel
7. $ sudo apt install pulseaudio
8. $ apt policy pulseaudio
pulseaudio:
  Installed: 1:13.99.2-1ubuntu2.2
  Candidate: 1:13.99.2-1ubuntu2.2
  Version table:
 *** 1:13.99.2-1ubuntu2.2 500
        500 http://tw.archive.ubuntu.com/ubuntu groovy-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     1:13.99.2-1ubuntu2.1 500
        500 http://tw.archive.ubuntu.com/ubuntu groovy-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu groovy-security/main amd64 Packages
     1:13.99.2-1ubuntu1 500
        500 http://tw.archive.ubuntu.com/ubuntu groovy/main amd64 Packages
9. $ sudo reboot
10. after boot into Ubuntu groovy
11. open sound settings
12. plug headset
13. can see "Headset Microphone - Built-in-Audio" in "Input Device" field.