在 bluetoothctl 上，我所做的任何事情都会返回“没有可用的默认控制器”。我试过bluetoothctl 没有可用的默认控制器，但它没有帮助。
hcitool dev 什么也没显示：
Devices:
的输出btmgmt power on：
Set Powered for hci0 failed with status 0x03 (Failed)
hciconfig hci0 up 也不起作用：
Can't init device hci0: cannot assign requested address(99)
我正在使用 bluez 5.50。
我试过 rfkill list，但蓝牙没有被阻止。这是输出 dmesg | grep Blue：
[ 6.417329] usb 1-7: Product: Bluetooth Radio
[ 8.468387] Bluetooth: Core ver 2.22
[ 8.468409] Bluetooth: HCI device and connection manager initialized
[ 8.468413] Bluetooth: HCI socket layer initialized
[ 8.468416] Bluetooth: L2CAP socket layer initialized
[ 8.468423] Bluetooth: SCO socket layer initialized
[ 9.634178] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 9.634180] Bluetooth: BNEP filters: protocol multicast
[ 9.634187] Bluetooth: BNEP socket layer initialized
[ 10.560211] Bluetooth: hci0: command 0x1001 tx timeout
[ 18.656216] Bluetooth: hci0: HCI_OP_READ_LOCAL_VERSION failed (-110)
[ 356.544055] Bluetooth: hci0: command 0x1001 tx timeout
[ 364.735232] Bluetooth: hci0: HCI_OP_READ_LOCAL_VERSION failed (-110)
[ 496.555828] Bluetooth: RFCOMM TTY layer initialized
[ 496.555836] Bluetooth: RFCOMM socket layer initialized
[ 496.555844] Bluetooth: RFCOMM ver 1.11```