[Pkg-utopia-maintainers] Bug#1031719: libpipewire-0.3-modules: pipewire module zeroconf discover filters out sources

[Alban Browaeys]

Likely an upstream issue.

I see the headset mic has an IPv6 address:
   address = [2a01:e0a:8db:8861:dead:beef:0:f0f8]
while advertised as IPv4.

pipewire now filter IPv6 zeroconf advertisment in its zeroconf-discover
module to avoid showing duplicate entries (one for IPv4 the other for
IPv6) in the client UI this might be related.
The fact that no IPv4 service is advertised (well it is but with an
IPv6 address) might explain why the pipewire zeroconf discover module
hide your headless mic.
You could try older pipewire debs (snapshot.debian.org) as this IPv6
hide was introduced recently or simply open a bug in the upstream bug
tracker. This was introduced due to
https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/2031

The change was made on the publishing side ie the server is the one
were you should downgrade pipewire. The version that introduced this
behaviour is 0.6.32 so downgtrading to 0.6.31 will do. see
https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/2861

The fact that an IPv6 address is published in an IPv4 entry might be
another upstream pipewire bug namely inhte zeroconf-publish module.
Though before reporting to upstream you should try at least pipewire
0.3.70 from debian experimental (and maybe even upstream code).

Mind that for me 0.3.70 module-zeroconf-discover module might crash on
startup but this is another issue that I am investigating. Might not
crash for you (the crash depends on the server box adverstising which
will be different for your setup). upstream git code is also affected.
This is https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1035280 not
yet reported upstream (as I have a hard time to reproduce properly with
my git master build).


Cheers,
Alban


On Tue, 21 Feb 2023 14:45:03 +0100 Landry MINOZA
<landry.minoza at gmail.com> wrote:
> Package: libpipewire-0.3-modules
> Version: 0.3.65-2
> Severity: normal
> 
> Dear Maintainer,
> 
> Trying to use remote devices with pipewire, I don't see some devices
> (specificaly a headset mic in my case).
> Reproduce on 2 sid clients.
> 
> I load zeroconf module:
> 
> pactl load-module module-zeroconf-discover
> 
> When listing available devices:
> Audio
>  ├─ Devices:
>  │      42. Audio interne                       [alsa]
>  │
>  ├─ Sinks:
>  │  *   45. Audio interne Stéréo analogique   [vol: 0.40]
>  │      62. Starship/Matisse HD Audio Controller Stéréo analogique on
landry at demetra [vol: 1.00]
>  │      64. [G533 Wireless Headset Dongle]      [vol: 1.00]
>  │
>  ├─ Sink endpoints:
>  │
>  ├─ Sources:
>  │  *   46. Audio interne Stéréo analogique   [vol: 1.00 MUTED]
>  │      60. Starship/Matisse HD Audio Controller Stéréo analogique on
landry at demetra [vol: 1.00]
>  │
>  ├─ Source endpoints:
>  │
>  └─ Streams:
> 
> The headset mic (source [G333 Wireless Headset Dongle] is exposed by
> avahi:
> 
> ❯ avahi-browse --resolve _pulse-source._tcp -t
> +  wlan0 IPv4 landry at demetra: [G533 Wireless Headset Dongle] Mono
PulseAudio Sound Source local
> +  wlan0 IPv4 landry at demetra: Starship/Matisse HD Audio Controller
St__r__o a PulseAudio Sound Source local
> =  wlan0 IPv4 landry at demetra: [G533 Wireless Headset Dongle] Mono
PulseAudio Sound Source local
>    hostname = [demetra.local]
>    address = [2a01:e0a:8db:8861:dead:beef:0:f0f8]
>    port = [4713]
>    txt = ["description=[G533 Wireless Headset Dongle] Mono"
"subtype=hardware" "channel_map=mono" "format=s16le" "channels=1"
"rate=48000" "device=alsa_input.usb-Logitech_G533_Gaming_Headset-
00.mono-fallback" "cookie=0x4a6f9a3a" "fqdn=demetra" "uname=Linux
x86_64 6.1.0-5-amd64" "user-name=landry" "server-version=PipeWire
0.3.65"]
> =  wlan0 IPv4 landry at demetra: Starship/Matisse HD Audio Controller
St__r__o a PulseAudio Sound Source local
>    hostname = [demetra.local]
>    address = [10.0.0.144]
>    port = [4713]
>    txt = ["description=Starship/Matisse HD Audio Controller
St\195\169r\195\169o analogique" "subtype=hardware" "channel_map=front-
left,front-right" "format=s32le" "channels=2" "rate=48000"
"device=alsa_input.pci-0000_0a_00.4.analog-stereo" "cookie=0x4a6f9a3a"
"fqdn=demetra" "uname=Linux x86_64 6.1.0-5-amd64" "user-name=landry"
"server-version=PipeWire 0.3.65"]
> 
> On the remote host, this source is visible and usable:
> Audio
>  ├─ Devices:
>  │      44. GM204 High Definition Audio Controller [alsa]
>  │      46. [G533 Wireless Headset Dongle]      [alsa]
>  │      47. Starship/Matisse HD Audio Controller [alsa]
>  │     122. Fairphone 4 5G                      [bluez5]
>  │
>  ├─ Sinks: