mSBC codec not available only CVSD one

[Hadrien Mary]

I am using Ubuntu 22.10 and my headset Pixel Buds Pro works correctly but only the low-quality CVSD codec is available and not the mSBC one for the Handsfree profile.

I know the Pixel Buds Pro headset are compatible with mSBC because on another machine also running Ubuntu 22.10, this headset correctly works with the mSBC codec (and the audio quality is much better for both input and output audio).

My motherboard is an Aorus x670 with AMD Zen 4 CPU.

The bluetooth controller seems to be:

```
Bus 005 Device 003: ID 0e8d:0616 MediaTek Inc. Wireless_Device
```

Let me know if you need more informations.
---
ProblemType: Bug
ApportVersion: 2.23.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 22.10
InstallationDate: Installed on 2022-09-27 (22 days ago)
InstallationMedia: Ubuntu 22.10 "Kinetic Kudu" - Beta amd64 (20220927.1)
NonfreeKernelModules: nvidia_modeset nvidia
Package: pipewire 0.3.58-2ubuntu1
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 5.19.0-21.21-generic 5.19.7
Tags: kinetic
Uname: Linux 5.19.0-21-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip docker lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True

[Hadrien Mary (hadim)]

I have also asked a similar question at https://answers.launchpad.net/ubuntu/+question/703537

[Hadrien Mary (hadim)]

More information.

Device:

```
$ wpctl inspect 66
id 66, type PipeWire:Interface:Device
    api.bluez5.address = "74:74:46:1F:3A:63"
    api.bluez5.class = "0x240404"
    api.bluez5.connection = "disconnected"
    api.bluez5.device = ""
    api.bluez5.icon = "audio-headset"
    api.bluez5.path = "/org/bluez/hci0/dev_74_74_46_1F_3A_63"
    bluez5.auto-connect = "[ hfp_hf hsp_hs a2dp_sink ]"
    bluez5.profile = "off"
  * client.id = "32"
    device.alias = "Pixel Buds Pro de Hadrien"
  * device.api = "bluez5"
    device.bus = "bluetooth"
  * device.description = "Pixel Buds Pro de Hadrien"
    device.form-factor = "headset"
    device.icon-name = "audio-headset-bluetooth"
  * device.name = "bluez_card.74_74_46_1F_3A_63"
    device.product.id = "0x3004"
    device.string = "74:74:46:1F:3A:63"
    device.vendor.id = "bluetooth:00e0"
  * factory.id = "14"
  * media.class = "Audio/Device"
  * object.serial = "438"
```

Sink:

```
$ wpctl inspect 128
id 128, type PipeWire:Interface:Node
    api.bluez5.address = "74:74:46:1F:3A:63"
    api.bluez5.codec = "cvsd"
    api.bluez5.profile = "headset-head-unit"
    api.bluez5.transport = ""
    audio.adapt.follower = ""
    card.profile.device = "1"
  * client.id = "32"
    clock.quantum-limit = "8192"
    device.api = "bluez5"
  * device.id = "66"
    device.intended-roles = "Communication"
    device.routes = "1"
  * factory.id = "8"
    factory.mode = "merge"
    factory.name = "api.bluez5.sco.sink"
    library.name = "audioconvert/libspa-audioconvert"
  * media.class = "Audio/Sink"
  * node.description = "Pixel Buds Pro de Hadrien"
    node.driver = "true"
  * node.name = "bluez_output.74_74_46_1F_3A_63.1"
    node.pause-on-idle = "false"
  * object.serial = "440"
  * priority.driver = "1010"
  * priority.session = "1010"
```

Source:

```
$ wpctl inspect 81
id 81, type PipeWire:Interface:Node
    api.bluez5.address = "74:74:46:1F:3A:63"
    api.bluez5.codec = "cvsd"
    api.bluez5.profile = "headset-head-unit"
    api.bluez5.transport = ""
    audio.adapt.follower = ""
    card.profile.device = "0"
  * client.id = "32"
    clock.quantum-limit = "8192"
    device.api = "bluez5"
  * device.id = "66"
    device.intended-roles = "Communication"
    device.routes = "1"
  * factory.id = "8"
    factory.mode = "split"
    factory.name = "api.bluez5.sco.source"
    library.name = "audioconvert/libspa-audioconvert"
  * media.class = "Audio/Source"
  * node.description = "Pixel Buds Pro de Hadrien"
    node.driver = "true"
  * node.name = "bluez_input.74_74_46_1F_3A_63.0"
    node.pause-on-idle = "false"
  * object.serial = "439"
  * priority.driver = "2010"
  * priority.session = "2010"
```

[Hadrien Mary (hadim)]

apport information

[Hadrien Mary (hadim)]

apport information

[Hadrien Mary (hadim)]

apport information

[Hadrien Mary (hadim)]

I checked the logs for the wireplumber, bluetooth and pipewire services and only the wireplumber shows something.

- I first connect the headset
- The profile is auto to CVSD
- I switch to mSBC (available in the menu)
- I see those wireplumber logs:

```
Oct 20 18:14:25 gollum wireplumber[2639]: connect(): Operation not supported
Oct 20 18:14:25 gollum wireplumber[2639]: 0x55807b962e38: can't send command 2: Operation not permitted
Oct 20 18:14:25 gollum wireplumber[2639]: (bluez_input.74_74_46_1F_3A_63.0-20) suspended -> error (Start error: Operation not permitted)
Oct 20 18:14:25 gollum wireplumber[2639]: connect(): Operation not supported
Oct 20 18:14:25 gollum wireplumber[2639]: 0x55807b977d88: can't send command 2: Operation not permitted
Oct 20 18:14:25 gollum wireplumber[2639]: (bluez_output.74_74_46_1F_3A_63.1-23) suspended -> error (Start error: Operation not permitted)
```

- After doing that, the mSBC option is not available in the Gnome Sound Settings menu anymore.

I tried to look for more logs but I can't find relevant ones.

Note that the above logs does not show on my other machine that works with the mSBC profile.

[Hadrien Mary (hadim)]

I have also reported the issue upstream at https://gitlab.freedesktop.org/pipewire/wireplumber/-/issues/363

[Hadrien Mary (hadim)]

According to https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/2783#note_1601772, the bug is related to the kernel driver for the adapter `0e8d:0616`.

[Hadrien Mary (hadim)]

The bug is now tracked at https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/2783

[marelo64 (marelo64-linux-kernel-bugs)]

Created attachment 303073
Logs for multiple relevant commands

- Ubuntu ticket: https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/2783
- Pipewire ticket: https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/2783

---

While the bluetooth adapter `0e8d:0616` is supposed to support HFP/mSBC (detected as such by pipewire), when switching to it, it fails and fall back to the low quality HFP/CVSD audio codec.

According to pipewire's dev, it could be an issue with the driver for that specific adapter since my headset (Pixel Buds Pro) works well on another machine with the exact same software stack (Ubuntu 22.10) but another bluetooth adapter where the Pixel Buds Pro works well with HFP/mSBC.

See logs attached.

[marelo64 (marelo64-linux-kernel-bugs)]

(Correct link for Ubuntu ticket: https://bugs.launchpad.net/ubuntu/+source/pipewire/+bug/1993668)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Boris Erdmann (boris-erdmann)]

This bug affects me, albeit with another chip that used to work with kernel 5.15 from Ubuntu 22.04

dmesg output:
```
[ 5.641569] Bluetooth: hci0: BCM: chip id 110
[ 5.642558] Bluetooth: hci0: BCM: features 0x2f
[ 5.658564] Bluetooth: hci0: BCM4350C5
[ 5.658570] Bluetooth: hci0: BCM4350C5 (003.006.007) build 0000
[ 5.661596] Bluetooth: hci0: BCM4350C5 'brcm/BCM-0a5c-6412.hcd' Patch
[ 5.682015] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac4350-pcie for chip BCM4350/8
[ 5.682301] brcmfmac 0000:3a:00.0: Direct firmware load for brcm/brcmfmac4350-pcie.Dell Inc.-XPS 13 9350.bin failed with error -2
[ 5.684268] brcmfmac 0000:3a:00.0: Direct firmware load for brcm/brcmfmac4350-pcie.Dell Inc.-XPS 13 9350.txt failed with error -2
[ 5.684313] brcmfmac 0000:3a:00.0: Direct firmware load for brcm/brcmfmac4350-pcie.txt failed with error -2
[ 5.879989] psmouse serio1: synaptics: Unable to query device: -5
[ 5.974249] input: Dell WMI hotkeys as /devices/platform/PNP0C14:01/wmi_bus/wmi_bus-PNP0C14:01/9DBB5994-A997-11DA-B012-B622A1EF5492/input/input17
[ 6.021264] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac4350-pcie for chip BCM4350/8
[ 6.021313] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available
[ 6.021581] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4350/8 wl0: Oct 22 2015 06:16:26 version 7.35.180.119 (r594535) FWID 01-e791c176
[ 6.032590] _ART package 0 is invalid, ignored
[ 6.032614] _ART package 0 is invalid, ignored
[ 6.076145] snd_hda_intel 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040380
[ 6.076154] snd_hda_intel 0000:00:1f.3: NHLT table not found
[ 6.076170] snd_hda_intel 0000:00:1f.3: enabling device (0000 -> 0002)
[ 6.076481] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 6.310307] intel_tcc_cooling: Programmable TCC Offset detected
[ 6.316550] Bluetooth: hci0: Dell DW1820A
[ 6.316558] Bluetooth: hci0: BCM4350C5 (003.006.007) build 1703
```