moServices

Having spare bluetooth keyboard and usb bluetooth adapter (Cambridge Silicon chipset VID:0x0A12, PID: 0x0001) at my disposal I tried to hook it to my xTreamer (AMP12). No luck though. dmesg says:

drivers/usb/class/bluetty.c: usb_bluetooth_probe - improper number of endpoints. Bluetooth driver not bound.
bluetty: probe of 2-2:1.2 failed with error -5
usbcore: registered new driver bluetty
drivers/usb/class/bluetty.c: USB Bluetooth tty driver v0.13

The same setup works quite well on a laptop.
Any ideas? Should I use different bluetooth usb adapter?

No ideas. BT stack is not implement on our kernel.