Pi as Bluetooth headset

Question

I am having problem setting up Pi as Bluetooth headset - HSP profile (I do not need/want A2DP, HFP, etc. Just the simplest HSP.) In short, Pi should be seen as a headset by any device that can connect to BT headsets

OS: stretch (2017-11-29)

pulseaudio and ofono successfully installed as per https://scribles.net/enabling-hands-free-profile-on-raspberry-pi-raspbian-stretch-by-using-pulseaudio/

ASUS USB BT dongle is provisioned and recognized as per http://youness.net/raspberry-pi/bluetooth-headset-raspberry-pi-3-ad2p-hsp

Trusting and pairing work fine. Connecting fails after few seconds (it connects then immediately disconects.) The handset reports 'service not supported'. Obviously, headset profile is not listed (see below). Attempts to change class to something that looks like headset failed.

All help appreciated.

[bluetooth]# show
Controller xx:xx:xx:xx:xx
    Name: zz
    Alias: zz
    Class: 0x0c0404
    Powered: yes
    Discoverable: yes
    Pairable: yes
    UUID: Audio Sink                (0000110b-0000-1000-8000-00805f9b34fb)
    UUID: Generic Attribute Profile (00001801-0000-1000-8000-00805f9b34fb)
    UUID: Audio Source              (0000110a-0000-1000-8000-00805f9b34fb)
    UUID: A/V Remote Control        (0000110e-0000-1000-8000-00805f9b34fb)
    UUID: PnP Information           (00001200-0000-1000-8000-00805f9b34fb)
    UUID: Generic Access Profile    (00001800-0000-1000-8000-00805f9b34fb)
    UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb)
    Modalias: usb:v1D6Bp0246d052B
    Discovering: no

Edit: it works as headset only with MacBook Pro (Sierra) and nothing else (tried many handsets, Windows machines, etc.) What is special about MacBook?

It fails on everything else, after connecting, with:

[CHG] Device zz:zz:zz:zz:zz:zz ServicesResolved: no
[CHG] Device zz:zz:zz:zz:zz:zz Connected: no

Edit2: SOLVED

1. Manually install newer versions of Ofono (source) and Pulseaudio (from Buster packages)

Ofono 1.21:

ofono-1.21.tar.gz

Pulseaudio 11 package and and deps:

libpulse0_11.1-4_armhf.deb pulseaudio_11.1-4_armhf.deb pulseaudio-module-bluetooth_11.1-4_armhf.deb

2. No need to edit /etc/pulse/default.pa at all

3. Edit /etc/dbus-1/system.d/ofono.conf and add

(see https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Bluetooth/ for explanation)

Answer 1

1. Manually install newer versions of Ofono (source) and Pulseaudio (from Buster packages)

Ofono 1.21:

ofono-1.21.tar.gz

Pulseaudio 11 package and and deps:

libpulse0_11.1-4_armhf.deb pulseaudio_11.1-4_armhf.deb pulseaudio-module-bluetooth_11.1-4_armhf.deb

2. No need to edit /etc/pulse/default.pa at all

3. Edit /etc/dbus-1/system.d/ofono.conf and add

(see https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Bluetooth/ for explanation)

Answer 2

I'm very happy with bt-speaker
A simple Bluetooth Speaker Daemon designed for the Raspberry Pi