Public bug reported:
Upstream: already fixed in WirePlumber 0.5.14
(https://gitlab.freedesktop.org/pipewire/wireplumber/-/blob/master/NEWS.rst
/ !786). Debian testing has 0.5.14-1. Ubuntu still has 0.5.13 on
resolute (0.5.14 exists as 0.5.14-1ubuntu2 on another series).
Symptom: Samsung Galaxy Buds4 over BAP/LC3: only one ear plays. pactl
sink is 1ch UNK/aux0 (or Pulse can't assign STEREO) even when BlueZ has
a CSIP DeviceSet of size 2 and both pac_sink0 transports exist.
Cause: /usr/share/wireplumber/scripts/monitors/bluez.lua createSetNode()
does args["combine.props"] = Json.Object(properties) after putting a
Json.Array in audio.position. On 0.5.13 that array becomes a pointer
string. Confirmed on this install before locally patching that file.
Hardware/stack:
- Ubuntu 26.04, kernel 7.1.3, Intel Arrow Lake USB BT 5.4 (cis-central)
- BlueZ 5.87, PipeWire 1.6.2, WirePlumber 0.5.13-1ubuntu1
- Headset: Galaxy Buds4, two LE devices, PACS FL=0x1 / FR=0x2
Ask: Please sync resolute to WirePlumber ≥ 0.5.14, or backport !786. A
user overlay of bluez.lua is not loaded on 0.5.13 (only
/usr/share/.../bluez.lua).
** Affects: wireplumber (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2167435
Title:
WirePlumber 0.5.13 still serializes BAP device-set audio.position as a
pointer; Galaxy Buds LE Audio stay mono
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