Help Bluetooth not working on i9100G


For a long while now, when trying to enable BT the switch stays greyed out in the ON position, then goes back to OFF after a few seconds. I am running the latest official Germany firmware from Sammobile. I wanted to try out logcat through adb in order to diagnose the issue, but have no idea what to set the CLI as. adb logcat BluetoothAdapterStateMachinee:E *:S -v long seems not to yield anything, and I have no idea what to put in the place of the BT state machine, nor where to find a guide stating all BT-related switches within Android. Any ideas?