[pulseaudio-discuss] issue with audio over headset_head_unit

[Arun Raghavan]

On Thu, 25 Aug 2016, at 03:10 PM, Anand Nekkunti wrote:
> Hi
>     I am working audio over Bluetooth . I am able to pair and connect
>     with
> all speakers(a2dp and HSD ).
> but audio coming only  speakers which supports a2dp protocol . I am not
> able to understand why speakers which has HSD protocol not working(no
> error
> in pulseaudio log) . Do I need configure anything for this or is there
> any
> way forcefully set protocol as a2dp
> 
> Board :ARM imx6
> pulseaudio : 6.0
> Bluez :5
> 
> Working Speaker :
> 
>  index: 2
> name: <bluez_sink.00_9E_C8_11_69_42>
> driver: <module-bluez5-device.c>
> flags: HARDWARE DECIBEL_VOLUME LATENCY
> state: IDLE
> suspend cause:
> priority: 9030
> volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% /
> 0.00 dB
>        balance 0.00
> base volume: 65536 / 100% / 0.00 dB
> volume steps: 65537
> muted: no
> current latency: 28.67 ms
> max request: 3 KiB
> max rewind: 0 KiB
> monitor source: 4
> sample spec: s16le 2ch 44100Hz
> channel map: front-left,front-right
>             Stereo
> used by: 0
> linked by: 0
> fixed latency: 42.41 ms
> card: 2 <bluez_card.00_9E_C8_11_69_42>
> module: 21
> properties:
> bluetooth.protocol = "a2dp_sink"
> device.description = "Mi Bluetooth Speaker"
> device.string = "00:9E:C8:11:69:42"
> device.api = "bluez"
> device.class = "sound"
> device.bus = "bluetooth"
> device.form_factor = "portable"
> bluez.path = "/org/bluez/hci0/dev_00_9E_C8_11_69_42"
> bluez.class = "0x24041c"
> bluez.alias = "Mi Bluetooth Speaker "
> device.icon_name = "multimedia-player-bluetooth"
> ports:
> portable-output: Portable (priority 0, latency offset 0 usec, available:
> yes)
> properties:
> active port: <portable-output>
> 
> 
> 
> Not Working Speaker:
>    index: 2
> name: <bluez_sink.00_0C_8A_67_14_4E>
> driver: <module-bluez5-device.c>
> flags: HARDWARE HW_VOLUME_CTRL LATENCY
> state: RUNNING
> suspend cause:
> priority: 9030
> volume: mono: 43691 /  67%
>        balance 0.00
> base volume: 65536 / 100%
> volume steps: 16
> muted: no
> current latency: 31.00 ms
> max request: 0 KiB
> max rewind: 0 KiB
> monitor source: 4
> sample spec: s16le 1ch 8000Hz
> channel map: mono
>             Mono
> used by: 1
> linked by: 1
> fixed latency: 128.00 ms
> card: 2 <bluez_card.00_0C_8A_67_14_4E>
> module: 21
> properties:
> bluetooth.protocol = "headset_head_unit"
> device.intended_roles = "phone"
> device.description = "Bose AE2w 01.01.00"
> device.string = "00:0C:8A:67:14:4E"
> device.api = "bluez"
> device.class = "sound"
> device.bus = "bluetooth"
> device.form_factor = "headset"
> bluez.path = "/org/bluez/hci0/dev_00_0C_8A_67_14_4E"
> bluez.class = "0x240404"
> bluez.alias = "Bose AE2w 01.01.00"
> device.icon_name = "audio-headset-bluetooth"
> ports:
> headset-output: Headset (priority 0, latency offset 0 usec, available:
> unknown)
> properties:
> active port: <headset-output>

Are you using the native backend (HSP) or oFono (HFP) here? Might help
to look at system logs, or get verbose output from PulseAudio and BlueZ.

Cheers,
Arun