我有一台 Olivetti P75 电脑，我无法在 ubuntu 上使用蓝牙。我没有从sudo rfkill list
无论bluetoothctl我执行什么命令我都会得到No default controller available
一些信息：
lspci -nnk | grep -iA2 net; lsusb; hciconfig -a; dmesg | egrep -i 'blue|firm'
结果：
04:00.0 Network controller [0280]: Intel Corporation Centrino Wireless-N 2200 [8086:0890] (rev c4)
Subsystem: Intel Corporation Centrino Wireless-N 2200 BGN [8086:4022]
Kernel driver in use: iwlwifi
--
05:00.2 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0a)
Subsystem: CLEVO/KAPOK Computer RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1558:2706]
Kernel driver in use: r8169
Kernel modules: r8169
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for Bluetooth
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
[ 0.029860] Spectre V2 : Enabling Restricted Speculation for firmware calls
[ 0.066626] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[ 11.336561] iwlwifi 0000:04:00.0: loaded firmware version 18.168.6.1 op_mode iwldvm
[ 11.801005] psmouse serio2: elantech: assuming hardware version 3 (with firmware version 0x250f01)
[10958.656381] Bluetooth: Core ver 2.22
[10958.656402] Bluetooth: HCI device and connection manager initialized
[10958.656405] Bluetooth: HCI socket layer initialized
[10958.656407] Bluetooth: L2CAP socket layer initialized
[10958.656412] Bluetooth: SCO socket layer initialized
[11014.125193] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[11014.125194] Bluetooth: BNEP filters: protocol multicast
[11014.125197] Bluetooth: BNEP socket layer initialized