Solved Error: Linux bluetooth adapter present but failed to start

Some computer like Geekom IT12 with modern Linux like Mint 22 (wilma) or Ubuntu 24 (noble) based on Linux kernel 6.8 fail to start the Bluetooth adapter. This is how to resolve this initialization error. To resolve this:

• Install the git and dkms appliations: sudo apt install git dkms
git is the well-known version-control software. dkms is a kernel updating kit created by Dell.
• Install jeremyb31's bluetooth driver: git clone https://github.com/jeremyb31/bluetooth-6.8.git
  Thank you, Jeremy!
• Use dkms to add the new bluetooth driver for your Linux kernel to your kernel build-tree: sudo dkms add ./bluetooth-6.8
• Use dkms to install the bluetooth 4.2 driver into your kernel: sudo dkms install btusb/4.2
• Reboot

Hopefully, jeremyb31 will continue to support us all so generously as the Linux kernels advance without resolving these issues.

Source

Linux Mint Forums: [SOLVED](twice) Bluetooth adapter present, but doesn't work