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[Adithyan]

When I tried to connect my headset to Linux it is telling that:
Connection Failed: No audio endpoints registered

The Bluetooth service is up and running

? bluetooth.service - Bluetooth service
     Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: disabled)
     Active: active (running) since Mon 2021-11-08 18:37:13 IST; 28min ago
       Docs: man:bluetoothd(
   Main PID: 894 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 2142)
     Memory: 1.5M
        CPU: 147ms
     CGroup: /system.slice/bluetooth.service
             ??894 /usr/libexec/bluetooth/bluetoothd

Nov 08 18:37:09 kali systemd[1]: Starting Bluetooth service...
Nov 08 18:37:11 kali bluetoothd[894]: Bluetooth daemon 5.61
Nov 08 18:37:13 kali systemd[1]: Started Bluetooth service.
Nov 08 18:37:14 kali bluetoothd[894]: Starting SDP server
Nov 08 18:37:14 kali bluetoothd[894]: Bluetooth management interface 1.21 initialized
Nov 08 18:37:15 kali bluetoothd[894]: profiles/sap/server.c:sap_server_register() Sap driver initialization failed.
Nov 08 18:37:15 kali bluetoothd[894]: sap-server: Operation not permitted (1)
Nov 08 18:44:57 kali bluetoothd[894]: src/service.c:btd_service_connect() a2dp-sink profile connect failed for 25:57:BA:39:94:5C: Protocol not available
Nov 08 18:45:04 kali bluetoothd[894]: src/service.c:btd_service_connect() a2dp-sink profile connect failed for 25:57:BA:39:94:5C: Protocol not available

please anyone help me with this issue.

[Keith]

Hello Adithyan - and welcome to the Forum.

It would be helpful if you could tell us details about: your computer, operating system (e.g. Kali version) and headset, as suggested here:  https://linuxforums.org.uk/index.php?board=209.0

Keith

[Adithyan]

My kali version is 2021.3(Kali Linux)
My laptop is: Acer  aspire E 15
And the headset: is Zebronics thunder
Is This okay For the problem analysis?

[Keith]

I'm not familiar with Kali, but please enter the following command and post the output:

Code Select Expand

apt -a show bluetooth

[Adithyan]

This is the output I got.

Package: bluetooth
Version: 5.61-1+kali1
Priority: optional
Section: admin
Source: bluez
Maintainer: Kali Developers <[email protected]>
Original-Maintainer: Debian Bluetooth Maintainers <[email protected]>
Installed-Size: 78.8 kB
Depends: bluez
Suggests: bluez-cups, bluez-obexd, bluez-meshd
Homepage: http://www.bluez.org
Download-Size: 47.1 kB
APT-Manual-Installed: yes
APT-Sources: https://http.kali.org/kali kali-rolling/main amd64 Packages
Description: Bluetooth support (metapackage)
This package provides all of the different plugins supported
by the Bluez bluetooth stack.

[Keith]

Try this:

Code Select Expand

apt install libspa-0.2-bluetooth && apt purge pulseaudio-module-bluetoothThen reboot and try Bluetooth again. 

[Adithyan]

Thank you it worked for me   

[Keith]

......but try rebooting your PC again and tell us if Bluetooth still works with your headset. 

Keith

[Adithyan]

Yes it worked I can now connect my headset to kali, thank you

[Keith]

That is very good news.
Please edit the title of your first post to read Can't connect to Bluetooth [SOLVED]
This will allow other people who have the same problem to find the solution quickly. 

Thank you.
   Keith