Jetson Xavier NX Bluetooth connection problem

Robotics & Edge Computing Jetson Systems Jetson Xavier NX
1

Hello,

I used Jetson Xavier NX devkit with emmc(linux version: r3273) to test the function of my WIFI&BT module(RTL8822CE), the wifi connection was OK, but the bluetooth connection encountered a problem:

nvidia@ubuntu:~$ sudo su
root@ubuntu:~$ bluetoothctl
[bluetooth]# paired-devices
Device xx:xx:xx:xx:xx:xx my_device
[bluetooth]# connect xx:xx:xx:xx:xx:xx
Attempting to connect to xx:xx:xx:xx:xx:xx
Failed to connect: org.bluez.Error.Failed

And then I checked the message of bluetooth.service:

nvidia@ubuntu:~$ journalctl -u bluetooth.service -f
ubuntu bluetoothd[16847]: profiles/audio/a2dp.c: a2dp_source_connect() path /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX
ubuntu bluetoothd[16847]: a2dp-source profile connect failed for xx:xx:xx:xx:xx:xx: Protocol not available

Then I noticed that bluetooth should be enabled before using:

NVIDIA Jetson Linux Developer Guide: Hardware Setup | NVIDIA Docs

I followed the steps in this document but the problem was not solved.

And then I found similar problem in another topic, but the solution in this topic still did not work: Nvidia Jetson Xavier NX Bluetooth connection issue - Jetson & Embedded Systems / Jetson Xavier NX - NVIDIA Developer Forums

How can I solve this problem? Thanks very much.

3

Hi,
Would suggest try latest Jetpack 5.1.5. Because Jetpack 4 releases are old and new later protocols are not supported, so it reports the error:

ubuntu bluetoothd[16847]: a2dp-source profile connect failed for xx:xx:xx:xx:xx:xx: Protocol not available
4

Hello,
Thanks for the explanation.
For some reason, I don’t want to upgrade jetpack version, so is there anything I can try to solve this problem in R3273 version?

5

Hi,
Would suggest test whether it works on Xavier NX developer kit with Jetpack 5.1.5(Kernel 5.10). If it works, you may try to port kernel bluetooth driver from K5.15 to 4.9.

6

Hello,
Now that a2dp gives an error, so I want to use only hsp or hfp protocol. To do this, Which file should I modify? And what is the change?

8

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.