[pulseaudio-discuss] Problem with HSP/HFP profiles with bluetooth devices

[Antoine Nauzet]

Le ven. 8 sept. 2023 à 07:55, Sean Greenslade <sean at seangreenslade.com> a
écrit :

> On Wed, Sep 06, 2023 at 02:46:05PM +0200, Antoine Nauzet wrote:
> > Hello,
> >
> > I'm working on a Raspberry Pi 4, with an USB Bluetooth dongle, trying to
> > connect is to an android device as a hand free device.
> >
> > My configuration is the following:
> >
> >    - kernel version 6.1.21
> >    - bluez version 5.55
> >    - Pulseaudio version 14.2
> >    - ofono version 1.31
> >
> > I manage to make the connection, and the bluetooth device is detected by
> > Pulseaudio. The HSP/HFP profile is available. But when making a call,
> after
> > a certain time, the HSP/HFP profile change to unavailable. The device is
> > still connected, I can play sound from the android device to the
> raspberry.
> > But the sound from the call is not working anymore.
> >
> > What could explain the lost of the profil? Is there something to do to
> keep
> > it up?
> >
> > I tried with the last version of pulseaudio, compiling it from the
> sources
> > get from the git repository. The version is now 16.99.1-8-g13ef0.
> > Now, when connecting the device, both HSP and HFP are not available! I
> > could not get them to be up.
> >
> > Is there anything I have to do to make it work? When installing
> pulseaudio
> > with apt-get, I was installing pulseaudio and
> pulseaudio-module-bluetooth.
> > Is there something to include it when installing from the sources?
> >
> > What should I check to start figured out what is going on?
> >
> > Thank you for your help
> > Antoine
>
> I would start with using your distro's pulse package and checking both
> the system logs and the pulseaudio logs. I would expect there to be some
> chatter when a bluetooth device event like that happens.
>
> --Sean
>
>
I'm back to distro's pulse package. When the headset_audio_gateway
capability is switch to not available, the pulse audio logs this:

( 543.481|   8.707) D: [pulseaudio] bluez5-util.c: Device
/org/bluez/hci0/dev_78_29_C9_4F_C2_4E removed
( 543.482|   0.000) D: [pulseaudio] backend-ofono.c: HF card removed:
/card_2
( 543.482|   0.000) D: [pulseaudio] bluez5-util.c: Transport /card_2 state:
idle -> disconnected
( 543.482|   0.000) D: [pulseaudio] card.c: Setting card
bluez_card.4C_DD_31_43_8E_FF profile headset_audio_gateway to availability
status no
( 543.482|   0.000) D: [pulseaudio] device-port.c: Setting port
phone-output to status no
( 543.482|   0.000) D: [pulseaudio] core-subscribe.c: Dropped redundant
event due to change event.

Is "card_2" the card "2" display when typing pactl list cards? Beacause if
yes, this is an internal audio-card that I am not using. I' using an USB
in/out audio card

Antoine
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