Bluetooth HFP switching Error

Robotics & Edge Computing Jetson & Embedded Systems Jetson Orin NX
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1

Hi,
I am currently working on Orin NX with a BT (UART) module on Jetpack 6 (R36.3). I am trying to play audio with the Bluetooth headset. I came across the link and applied the same which solved to connectivity issue. However i want the headset to work with HFP by default, but it is always getting connected to A2DP (which has poor audio quality and latency as well). Also, I am not able to change the profile to HFP in sound settings as well.

I am using Sample rootfs for the Jetpack 6 (R36.3) ubuntu 22.04 LTS. Please Let me know how to fix this.

3

Hi,
Please also apply this and see if it helps this use-case:

Jetson/L4T/r36.3.x patches - eLinux.org
Enable BT function of receiving files

1 Like
4

Hi DaneLLL,

Thanks for the reply.

I do already came across that patch you shared, the issue is with the patch applied already. Looking forward for anyother possiblities.

Thanks,
Jai.

5

Hi,
Please check the discussion in
How to get bluetooth headset to default to HFP Profile and mSBC codec on Ubuntu 22.04 - Ask Ubuntu

And give it a try.

1 Like
6

Hi DaneLLL,

Thanks for the reply.

I have tried the suggestion you provided and switched to pulsewire using.

sudo apt install libldacbt-{abr,enc}2
sudo apt install libspa-0.2-bluetooth pipewire-audio-client-libraries  pipewire-media-session- wireplumber
systemctl --user daemon-reload
systemctl --user --now enable wireplumber.service
sudo cp /usr/share/doc/pipewire/examples/alsa.conf.d/99-pipewire-default.conf /etc/alsa/conf.d/
sudo apt remove pulseaudio-module-bluetooth
LANG=C pactl info | grep '^Server Name'

The output is
Server Name: PulseAudio (on PipeWire 0.3.48)

which has profile

        Profiles:
                off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
                a2dp-sink: High Fidelity Playback (A2DP Sink) (sinks: 1, sources: 0, priority: 16, available: yes)
                headset-head-unit: Headset Head Unit (HSP/HFP) (sinks: 1, sources: 1, priority: 1, available: yes)
                a2dp-sink-sbc: High Fidelity Playback (A2DP Sink, codec SBC) (sinks: 1, sources: 0, priority: 18, available: yes)
                a2dp-sink-sbc_xq: High Fidelity Playback (A2DP Sink, codec SBC-XQ) (sinks: 1, sources: 0, priority: 17, available: yes)
                headset-head-unit-cvsd: Headset Head Unit (HSP/HFP, codec CVSD) (sinks: 1, sources: 1, priority: 2, available: yes)
                headset-head-unit-msbc: Headset Head Unit (HSP/HFP, codec mSBC) (sinks: 1, sources: 1, priority: 3, available: yes)

But, switching profile to anything apart from A2DP is not giving any audio output. Also, the audio quality in A2DP is choppy in the bluetooth headset as same as in Pulseaudio.

I just need to enable the HFP by default in Pulseaudio itself. which has profile

        Profiles:                                                                                                                        
                a2dp_sink: High Fidelity Playback (A2DP Sink) (sinks: 1, sources: 0, priority: 40, available: yes)                       
                handsfree_head_unit: Handsfree Head Unit (HFP) (sinks: 1, sources: 1, priority: 30, available: no)                       
                off: Off (sinks: 0, sources: 0, priority: 0, available: yes)

HFP not available. Is it possible to fix this with pulseaudio and make this profile by default?

Thanks,
Jai.

7

Hi DaneLLL,
Is there any update on this issue?

8

Hi
For now we don’t have further idea. It looks like kernel driver is good and certain userspace setting needs to be modified. Would see if other users can share experience.

1 Like
10

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