Audio volume control.

[Robert Moskowitz]

What OS?  there is a thread about similar issue with Fedora 35 on the 
Fedora list.

On 11/22/21 01:32, Rob Landley wrote:
> 1) When I plug in USB headphones, it doesn't make them the default device.
> (Sometimes the output switches to it, but the volume control doesn't.) I have to
> click the speaker icon, click audio mixer, click output devices, scroll down to
> headphones, click the green checkbox, and THEN it's the default device.
>
> If you click the speaker icon to open the volume slider, the volume up/down keys
> on the keyboard are ignored until you close it again.
>
> Rob
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