connmanctl enable bluetooth error

Technical Support
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1

I am trying to use b2qt by connecting bluetooth usb and wifi usb.

root@b2qt-apalis-imx6:~# lsusb
Bus 001 Device 003: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 001 Device 004: ID 276d:2068
Bus 001 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

When I try to connect to Bluetooth or Wi-Fi, the following error message appears.

root@b2qt-apalis-imx6:~# connmanctl enable wifi
Error wifi: Method “SetProperty” with signature “sv” on interface “net.connman.Technology” doesn’t exist

root@b2qt-apalis-imx6:~# connmanctl enable bluetooth
Error bluetooth: Method “SetProperty” with signature “sv” on interface “net.connman.Technology” doesn’t exist

kernel driver backport was not touched.
What should I do?

2

Hello @rynforce,

In order to eliminate any hardware issues, could you perhaps install one reference image from the Toradex Easy Installer and check if the Bluetooth works there?

If it works with the reference image and doesn’t only work with B2Qt, could you then give us uname- a output?

Best Regards,
Janani

3

I’m new to Linux, so please understand.

In the QT image file installed by toradex easy installer, there does not seem to be an error in Connmanctl enable bluetooth. What more to do?

root@b2qt-apalis-imx6:# connmanctl enable bluetooth
Enabled bluetooth

root@b2qt-apalis-imx6:# uname -a
Linux b2qt-apalis-imx6 5.4.91-0+git.590db576d04d #1 SMP Tue Feb 2 16:38:41 UTC 2021 armv7l GNU/Linux

root@b2qt-apalis-imx6:# connmanctl enable bluetooth
Error bluetooth: Method “SetProperty” with signature “sv” on interface “net.connman.Technology” doesn’t exist

root@b2qt-apalis-imx6:# uname -a
Linux b2qt-apalis-imx6 4.9.87-2.8.3+g07d40f6ffcbb #1 SMP Tue May 25 05:47:20 UTC 2021 armv7l armv7l armv7l GNU/Linux

4

Additionally, all USB wifi shows as follows.

“wifi is not available”

I think it’s a realtek chipset problem.

5

As a result of adjusting the settings in menuconfig without using connmanctl, it was confirmed that it works normally.

use bitbake virtural/kernel -c menuconfig

I got the hint from this link.

Thank you for your help.

6

Hello @rynforce,

Thank you for your feedback… I am glad it works normally!

Best regards,
Janani