pulse audio update broke sound output

[Bret Busby]

On 6/4/24 19:43, Bret Busby wrote:
> 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 this pulse-audio update.
> 
> ..
> Bret Busby
> Armadale
> West Australia
> (UTC+0800)
> ..............
> 
> 
In looking at this
https://lists.ubuntu.com/archives/jammy-changes/2024-March/029399.html
it appears that working with wired headphones was sacrificed  to work 
with "Lenovo Thinkplus XT99 bluetooth headset".

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