Cannot connect to Raspberry PI 4 over Bluetooth

[gcampax]

trafficstars

Describe the issue you are experiencing

I tried to set it up a RPi4 running the most recent Home Assistant as a bluetooth speaker. With some fiddling, I got it to pair to my phone and laptop, but sound does not work. The logs from the audio container show:

E: [pulseaudio] bluez5-util.c: org.bluez.Media1.RegisterEndpoint() failed: org.freedesktop.DBus.Error.UnknownMethod: Method "RegisterEndpoint" with signature "oa{sv}" on interface "org.bluez.Media1" doesn't exist

This seems identical to https://github.com/Arkq/bluez-alsa/issues/542 which suggests it is a build configuration problem: bluez (bluetoothd) needs to be built with --enable-a2dp --enable-avrcp

What operating system image do you use?

rpi4 (Raspberry Pi 4/400 32-bit OS)

What version of Home Assistant Operating System is installed?

8.4

Did you upgrade the Operating System.

Yes

Steps to reproduce the issue

1. Enable Bluetooth. This popped up in the UI and I confirmed.
2. Pair a phone or laptop with Bluetooth. I did it by hand by calling DBus methods using the web terminal (I wish there was a UI for it)
3. Connect to Home Assistant from the phone or laptop.

Anything in the Supervisor logs that might be useful for us?

See above

Anything in the Host logs that might be useful for us?

See above

System Health information

No response

Additional information

No response

[agners]

Indeed, it seems that BlueZ is by default not compiled with this options in Buildroot. There is the Buildroot BR2_PACKAGE_BLUEZ5_UTILS_PLUGINS_AUDIO option, I'll enable it in OS 9.

[agners]

Can you try the latest development build 9.0.dev20220816? It should have the options configured correctly.

[gcampax]

Happy to try it! How do I do that? I tried:

ha os update --version 9.0.dev20220816

and I got

Error: Error raised from OTA Webserver: 404

EDIT: never mind, it works after joining the dev channel

[gcampax]

Ok, testing this build I'm making progress, in that I'm able to connect from my phone in HSP/HFP mode, but actual audio playing fails. I'm seeing these errors in the logs:

E: [pulseaudio] backend-native.c: socket(SEQPACKET, SCO) Address family not supported by protocol E: [pulseaudio] backend-native.c: accept(): Not a socket

Probably some more options to enable in the kernel to have bluetooth audio support?

(A2DP audio support would be even better but that seems to fail for reasons I don't quite understand)

[github-actions[bot]]

There hasn't been any activity on this issue recently. To keep our backlog manageable we have to clean old issues, as many of them have already been resolved with the latest updates. Please make sure to update to the latest Home Assistant OS version and check if that solves the issue. Let us know if that works for you by adding a comment 👍 This issue has now been marked as stale and will be closed if no further activity occurs. Thank you for your contributions.