On Fri, Dec 16, 2022, at 12:12 PM, Marcel Holtmann wrote: > Their devices claim to support the erroneous data reporting, but don't > actually support the required commands. So blacklist them and add a > quirk. This device appears to not support HCI_OP_LE_READ_TRANSMIT_POWER, either. I get this with the above patch applied: > Bluetooth: hci0: Opcode 0x204b failed: -56 Then it fails to register as a functioning interface, and bluez thinks bluetooth is turned off. In my case, it's a Techkey long range adapter, which is probably a similar model to the above mentioned Ugreen device, except that it also has a detachable pole antenna.
