Orange Pi 5 Max - Help with Bluetooth

Troubleshooting
1

Creating a bug report/issue

I have searched the existing open and closed issues

Required Information

  • DietPi version | G_DIETPI_VERSION_CORE=9
    G_DIETPI_VERSION_SUB=11
    G_DIETPI_VERSION_RC=2
    G_GITBRANCH=‘master’
    G_GITOWNER=‘MichaIng’
  • Distro version | bookworm
  • Kernel version | Linux Opi5 6.1.84-vendor-rk35xx #1 SMP Sun Jan 5 09:09:31 UTC 2025 aarch64 GNU/Linux
  • Architecture | arm64
  • SBC model | Orange Pi 5 Max (aarch64)
  • Power supply used | 5V 4A
  • SD card used | Crucial P5 Plus NVME

Steps to reproduce

dietpi-config → Advanced options → Bluetooth [ON]
sudo bluetoothctl
show

Expected behaviour

Display BT controller info

Actual behaviour

Was seeing “no default controller”
Tried various tweaks found by searching for similar reports, now am seeing:
Waiting to connect to bluetoothd…

Extra details

Originally had serial ports disabled, then enabled (ttyS7)
And changed /dev/ttyBT0 to /dev/ttyS7 in sprd-bluetooth.service
since ls /dev/tty* did not list ttyBT0

So the missing ttyBT0 is probably root cause, but not sure why it’s not there.

Any help greatly appreciated

2

kernel patch maybe?

The chipset is the ap6611

so who knows if the stock kernel has the drivers for that particular chipset…or if they need to be built and then modprobed in at boot

Sparklan driver here

Maybe build a DKMS automatic module build when kernels get upgraded

Lol…I used duck.ai to generate a convoluted “howto”
Do not follow this simple and incorrect…but it get’s you in the “ballpark” I guess

User prompt 2 of 2 - 3/22/2025, 10:06:08 AM:
AP6611 dkms kernel module build for dietpi

GPT-4o mini:
To build the AP6611 DKMS kernel module on DietPi, you can follow these steps:

  1. Update Your System: Make sure your DietPi system is up to date.

    sudo apt update
sudo apt upgrade

  2. Install Required Packages: You need to install DKMS and the kernel headers for your current kernel.

    sudo apt install dkms linux-headers-$(uname -r)

  3. Download the AP6611 Driver: You may need to download the driver source code for the AP6611. This can often be found on the manufacturer’s website or a repository like GitHub. For example:

    git clone https://github.com/your-repo/ap6611.git
cd ap6611

  4. Create a DKMS Configuration File: You need to create a DKMS configuration file. This is usually named dkms.conf and should be placed in the root of the driver source directory. Here’s a basic example of what it might look like:

    PACKAGE_NAME="ap6611"
PACKAGE_VERSION="1.0"
CLEAN="make clean"
MAKE="make"
BUILT_MODULE_NAME[0]="ap6611"
DEST_MODULE_LOCATION[0]="/kernel/drivers/net/wireless/"

  5. Add the Module to DKMS: Use the following command to add the module to DKMS.

    sudo dkms add .

  6. Build the Module: Now, build the module using DKMS.

    sudo dkms build ap6611/1.0

  7. Install the Module: Finally, install the module.

    sudo dkms install ap6611/1.0

  8. Load the Module: After installation, you can load the module using:

    sudo modprobe ap6611

  9. Check the Module: Verify that the module is loaded correctly.

    lsmod | grep ap6611
3

Thanks for info. Yes ap6611 is chip, mentioned in dmesg so something is loaded – wifi is working.

BT is not critical for my needs, but would like to get it working. Not sure if I am ready to patch the kernel, the board+dietpi is working really well :stuck_out_tongue:

Thanks for your advise, I may pursue that if I get more adventurous.