pulse audio update broke sound output

[Bret Busby]

On 06/04/2024 19:29, Bret Busby wrote:
> Hello.
> 
> I am running Linux Mint 21.3 , which runs on the base system of Ubuntu 
> 22.04.x, which had a recent pulse-audio update, and I have consequently 
> lost a channel of sound through the headphones.
> 
> I have tried two different sets of headphones, and, with both, a channel 
> of sound is now missing; when the output is switched completely to the 
> particular channel, no output occurs.
> 
> I am wondering whether anyone else has encountered this, and, how to fix 
> what the update has apparently done.
> 
> ....
> Bret Busby
> Armadale
> Western Australia
> (UTC+0800)
> .................
> 

Control Panel -> System Reports -> System Information
shows

"
Audio:
   Device-1: Intel C610/X99 series HD Audio vendor: Dell driver: 
snd_hda_intel v: kernel
     bus-ID: 00:1b.0 chip-ID: 8086:8d20 class-ID: 0403
   Device-2: NVIDIA TU116 High Definition Audio vendor: ASUSTeK driver: 
snd_hda_intel v: kernel
     pcie: speed: 8 GT/s lanes: 16 bus-ID: 03:00.1 chip-ID: 10de:1aeb 
class-ID: 0403
   Device-3: Sunplus Innovation AAPDQT-0622-W type: USB driver: 
snd-usb-audio,uvcvideo
     bus-ID: 3-13:7 chip-ID: 1bcf:2cb4 class-ID: 0102 serial: <filter>
   Sound Server-1: ALSA v: k5.15.0-101-generic running: yes
   Sound Server-2: PulseAudio v: 15.99.1 running: yes
   Sound Server-3: PipeWire v: 0.3.48 running: yes
"

It worked before tyhis pulse-audio update.

..
Bret Busby
Armadale
West Australia
(UTC+0800)
..............