Ubuntu 20.10, Gnome 3.38.1.
All of the sudden the Gnome sound settings is not seeing any output devices in the Settings/Sound dropdown menu. The sound playback is actually working. Alsa Mixer can control the volume, but my dedicated volume up/down keys, mute mic/speakers keys, and their corresponding LEDs are not working. The volume slider in Settings/Sound has no effect.
I reinstalled pulseaudio, let it reubuild ~/.config/pulse. That didn't help. Then I created a new user. The new user has the sound control. Therefore the problem is not system-wide. I'm guessing it may be Gnome related. The only Gnome relevant thing I did before I lost the sound control was to disable the built-in Desktop Icons in Extensions and add Desktop Icons ng (ding) extension in Tweaks.
I appreciate any tips to regain the sound control.
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