我有联想 Y520（军团）使用 Gentoo 并未能设置蓝牙支持。文档说：
蓝牙无线 * 带 Wifi 卡的组合
我按照https://wiki.gentoo.org/wiki/蓝牙但还是没有运气。
Linux 内核：5.7.8-gentoo
内核配置：
$ cat /usr/src/linux/.config | egrep -i "usb|blue" | grep -v '^#'
CONFIG_USB_NET_DRIVERS=y
CONFIG_MOUSE_SYNAPTICS_USB=m
CONFIG_MEDIA_USB_SUPPORT=y
CONFIG_USB_VIDEO_CLASS=m
CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV=y
CONFIG_USB_GSPCA=m
CONFIG_SND_USB=y
CONFIG_USB_HID=y
CONFIG_USB_HIDDEV=y
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_COMMON=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB=y
CONFIG_USB_PCI=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_DEFAULT_PERSIST=y
CONFIG_USB_AUTOSUSPEND_DELAY=2
CONFIG_USB_MON=y
CONFIG_USB_XHCI_HCD=y
CONFIG_USB_XHCI_PCI=y
CONFIG_USB_XHCI_PLATFORM=m
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_TT_NEWSCHED=y
CONFIG_USB_EHCI_PCI=y
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_PCI=y
CONFIG_USB_UHCI_HCD=y
CONFIG_USB_PRINTER=y
CONFIG_USB_WDM=m
CONFIG_USB_STORAGE=y
CONFIG_USB_SERIAL=m
CONFIG_USB_SERIAL_SIMPLE=m
CONFIG_USB_SERIAL_PL2303=m
CONFIG_EARLY_PRINTK_USB=y
已加载的模块：
$ lsmod
Module Size Used by
x86_pkg_temp_thermal 20480 0
wmi_bmof 16384 0
wmi 24576 1 wmi_bmof
xhci_plat_hcd 16384 0
cdc_wdm 20480 0
pl2303 24576 0
usb_serial_simple 20480 0
usbserial 40960 2 pl2303,usb_serial_simple
snd_hda_codec_realtek 106496 1
snd_hda_codec_generic 77824 2 snd_hda_codec_realtek
snd_hda_intel 36864 6
snd_intel_dspcfg 16384 1 snd_hda_intel
snd_hda_codec 118784 3 snd_hda_codec_generic,snd_hda_intel,snd_hda_codec_realtek
snd_hwdep 16384 1 snd_hda_codec
snd_hda_core 77824 4 snd_hda_codec_generic,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
snd_pcm 102400 3 snd_hda_intel,snd_hda_codec,snd_hda_core
iwlmvm 348160 0
intel_rapl_msr 20480 0
intel_rapl_common 28672 1 intel_rapl_msr
intel_powerclamp 20480 0
intel_pch_thermal 16384 0
iwlwifi 327680 1 iwlmvm
configs 45056 0
psmouse 151552 0
rmi_smbus 16384 0
rmi_i2c 16384 0
rmi_core 77824 2 rmi_smbus,rmi_i2c
elan_i2c 40960 0
synaptics_usb 16384 0
synaptics_i2c 16384 0
ntfs 212992 0
ecb 16384 0
cpufreq_userspace 16384 0
v4l2_dv_timings 36864 0
gspca_main 28672 0
uvcvideo 106496 0
videobuf2_vmalloc 16384 2 gspca_main,uvcvideo
videobuf2_memops 16384 1 videobuf2_vmalloc
videobuf2_v4l2 24576 2 gspca_main,uvcvideo
videodev 212992 3 gspca_main,videobuf2_v4l2,uvcvideo
videobuf2_common 49152 3 gspca_main,videobuf2_v4l2,uvcvideo
i2c_mux 16384 0
bluetooth 462848 6
ecdh_generic 16384 1 bluetooth
ecc 32768 1 ecdh_generic
efivarfs 16384 1
fuse 122880 1
USB：
$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 04f2:b57e Chicony Electronics Co., Ltd EasyCamera
Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 004: ID 8087:0a2b Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
$ lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/8p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M
|__ Port 3: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 3: Dev 2, If 1, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 3: Dev 2, If 2, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 6: Dev 3, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 6: Dev 3, If 1, Class=Video, Driver=uvcvideo, 480M
|__ Port 11: Dev 4, If 0, Class=Wireless, Driver=, 12M
|__ Port 11: Dev 4, If 1, Class=Wireless, Driver=, 12M
相关部分来自lsusb -v：
$ lsusb -v -d 8087:0a2b
Bus 001 Device 004: ID 8087:0a2b Intel Corp.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 224 Wireless
bDeviceSubClass 1 Radio Frequency
bDeviceProtocol 1 Bluetooth
bMaxPacketSize0 64
idVendor 0x8087 Intel Corp.
idProduct 0x0a2b
bcdDevice 0.10
iManufacturer 0
iProduct 0
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x00b1
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 224 Wireless
bInterfaceSubClass 1 Radio Frequency
bInterfaceProtocol 1 Bluetooth
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 224 Wireless
bInterfaceSubClass 1 Radio Frequency
bInterfaceProtocol 1 Bluetooth
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x0000 1x 0 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x0000 1x 0 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 2
bInterfaceClass 224 Wireless
bInterfaceSubClass 1 Radio Frequency
bInterfaceProtocol 1 Bluetooth
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x0009 1x 9 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x0009 1x 9 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 2
bNumEndpoints 2
bInterfaceClass 224 Wireless
bInterfaceSubClass 1 Radio Frequency
bInterfaceProtocol 1 Bluetooth
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x0011 1x 17 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x0011 1x 17 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 3
bNumEndpoints 2
bInterfaceClass 224 Wireless
bInterfaceSubClass 1 Radio Frequency
bInterfaceProtocol 1 Bluetooth
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x0019 1x 25 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x0019 1x 25 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 4
bNumEndpoints 2
bInterfaceClass 224 Wireless
bInterfaceSubClass 1 Radio Frequency
bInterfaceProtocol 1 Bluetooth
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x0021 1x 33 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x0021 1x 33 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 5
bNumEndpoints 2
bInterfaceClass 224 Wireless
bInterfaceSubClass 1 Radio Frequency
bInterfaceProtocol 1 Bluetooth
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x0031 1x 49 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x0031 1x 49 bytes
bInterval 1
can't get device qualifier: Resource temporarily unavailable
can't get debug descriptor: Resource temporarily unavailable
Device Status: 0x0001
Self Powered
PCI：
$ lspci -kk
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 05)
Subsystem: Lenovo Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers
Kernel driver in use: skl_uncore
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16) (rev 05)
Kernel driver in use: pcieport
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 630 (rev 04)
Subsystem: Lenovo HD Graphics 630
Kernel driver in use: i915
00:14.0 USB controller: Intel Corporation 100 Series/C230 Series Chipset Family USB 3.0 xHCI Controller (rev 31)
Subsystem: Lenovo 100 Series/C230 Series Chipset Family USB 3.0 xHCI Controller
Kernel driver in use: xhci_hcd
00:14.2 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Thermal Subsystem (rev 31)
Subsystem: Lenovo 100 Series/C230 Series Chipset Family Thermal Subsystem
Kernel driver in use: intel_pch_thermal
Kernel modules: intel_pch_thermal
00:16.0 Communication controller: Intel Corporation 100 Series/C230 Series Chipset Family MEI Controller #1 (rev 31)
Subsystem: Lenovo 100 Series/C230 Series Chipset Family MEI Controller
00:17.0 SATA controller: Intel Corporation HM170/QM170 Chipset SATA Controller [AHCI Mode] (rev 31)
Subsystem: Lenovo HM170/QM170 Chipset SATA Controller [AHCI Mode]
Kernel driver in use: ahci
00:1c.0 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #2 (rev f1)
Kernel driver in use: pcieport
00:1c.2 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #3 (rev f1)
Kernel driver in use: pcieport
00:1c.3 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #4 (rev f1)
Kernel driver in use: pcieport
00:1d.0 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #9 (rev f1)
Kernel driver in use: pcieport
00:1f.0 ISA bridge: Intel Corporation HM175 Chipset LPC/eSPI Controller (rev 31)
Subsystem: Lenovo HM175 Chipset LPC/eSPI Controller
00:1f.2 Memory controller: Intel Corporation 100 Series/C230 Series Chipset Family Power Management Controller (rev 31)
Subsystem: Lenovo 100 Series/C230 Series Chipset Family Power Management Controller
00:1f.3 Audio device: Intel Corporation CM238 HD Audio Controller (rev 31)
Subsystem: Lenovo CM238 HD Audio Controller
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1f.4 SMBus: Intel Corporation 100 Series/C230 Series Chipset Family SMBus (rev 31)
Subsystem: Lenovo 100 Series/C230 Series Chipset Family SMBus
Kernel driver in use: i801_smbus
02:00.0 SD Host controller: O2 Micro, Inc. SD/MMC Card Reader Controller (rev 01)
Subsystem: Lenovo SD/MMC Card Reader Controller
03:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
Subsystem: Intel Corporation Dual Band Wireless-AC 8265
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)
Subsystem: Lenovo RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
Kernel driver in use: r8169
05:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM961/PM961
Subsystem: Samsung Electronics Co Ltd NVMe SSD Controller SM961/PM961
Kernel driver in use: nvme
内核日志：
$ dmesg | egrep -i "usb|blue"
[ 0.164569] ACPI: bus type USB registered
[ 0.164569] usbcore: registered new interface driver usbfs
[ 0.164569] usbcore: registered new interface driver hub
[ 0.164569] usbcore: registered new device driver usb
[ 0.519213] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 0.519222] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 0.519231] uhci_hcd: USB Universal Host Controller Interface driver
[ 0.519359] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 1
[ 0.520678] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.07
[ 0.520680] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.520682] usb usb1: Product: xHCI Host Controller
[ 0.520684] usb usb1: Manufacturer: Linux 5.7.8-gentoo xhci-hcd
[ 0.520685] usb usb1: SerialNumber: 0000:00:14.0
[ 0.520788] hub 1-0:1.0: USB hub found
[ 0.521259] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2
[ 0.521263] xhci_hcd 0000:00:14.0: Host supports USB 3.0 SuperSpeed
[ 0.521286] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.07
[ 0.521288] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.521290] usb usb2: Product: xHCI Host Controller
[ 0.521291] usb usb2: Manufacturer: Linux 5.7.8-gentoo xhci-hcd
[ 0.521293] usb usb2: SerialNumber: 0000:00:14.0
[ 0.521351] hub 2-0:1.0: USB hub found
[ 0.521448] usb: port power management may be unreliable
[ 0.521576] usbcore: registered new interface driver usblp
[ 0.521585] usbcore: registered new interface driver usb-storage
[ 0.575596] usbcore: registered new interface driver usbhid
[ 0.575597] usbhid: USB HID core driver
[ 0.846512] usb 1-3: new full-speed USB device number 2 using xhci_hcd
[ 0.975882] usb 1-3: New USB device found, idVendor=046d, idProduct=c52b, bcdDevice=12.09
[ 0.975883] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 0.975884] usb 1-3: Product: USB Receiver
[ 0.975884] usb 1-3: Manufacturer: Logitech
[ 0.977856] input: Logitech USB Receiver as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/0003:046D:C52B.0001/input/input6
[ 1.029722] hid-generic 0003:046D:C52B.0001: input,hidraw0: USB HID v1.11 Keyboard [Logitech USB Receiver] on usb-0000:00:14.0-3/input0
[ 1.031485] input: Logitech USB Receiver Mouse as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.1/0003:046D:C52B.0002/input/input7
[ 1.031548] input: Logitech USB Receiver Consumer Control as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.1/0003:046D:C52B.0002/input/input8
[ 1.083687] input: Logitech USB Receiver System Control as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.1/0003:046D:C52B.0002/input/input9
[ 1.084062] hid-generic 0003:046D:C52B.0002: input,hiddev96,hidraw1: USB HID v1.11 Mouse [Logitech USB Receiver] on usb-0000:00:14.0-3/input1
[ 1.086107] hid-generic 0003:046D:C52B.0003: hiddev97,hidraw2: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:14.0-3/input2
[ 1.198533] usb 1-6: new high-speed USB device number 3 using xhci_hcd
[ 1.276317] Bluetooth: Core ver 2.22
[ 1.276325] Bluetooth: HCI device and connection manager initialized
[ 1.276328] Bluetooth: HCI socket layer initialized
[ 1.276329] Bluetooth: L2CAP socket layer initialized
[ 1.276331] Bluetooth: SCO socket layer initialized
[ 1.276922] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 1.276922] Bluetooth: BNEP filters: protocol multicast
[ 1.276924] Bluetooth: BNEP socket layer initialized
[ 1.285649] usbcore: registered new interface driver uvcvideo
[ 1.285650] USB Video Class driver (1.1.1)
[ 1.290789] usbcore: registered new interface driver synaptics_usb
[ 1.328502] usbcore: registered new interface driver usb_serial_simple
[ 1.328511] usbserial: USB Serial support registered for carelink
[ 1.328516] usbserial: USB Serial support registered for zio
[ 1.328520] usbserial: USB Serial support registered for funsoft
[ 1.328525] usbserial: USB Serial support registered for flashloader
[ 1.328529] usbserial: USB Serial support registered for google
[ 1.328534] usbserial: USB Serial support registered for libtransistor
[ 1.328538] usbserial: USB Serial support registered for vivopay
[ 1.328543] usbserial: USB Serial support registered for moto_modem
[ 1.328547] usbserial: USB Serial support registered for motorola_tetra
[ 1.328552] usbserial: USB Serial support registered for novatel_gps
[ 1.328556] usbserial: USB Serial support registered for hp4x
[ 1.328560] usbserial: USB Serial support registered for suunto
[ 1.328566] usbserial: USB Serial support registered for siemens_mpi
[ 1.329088] usbcore: registered new interface driver pl2303
[ 1.329094] usbserial: USB Serial support registered for pl2303
[ 1.329795] usbcore: registered new interface driver cdc_wdm
[ 1.384686] usb 1-6: New USB device found, idVendor=04f2, idProduct=b57e, bcdDevice=87.40
[ 1.384687] usb 1-6: New USB device strings: Mfr=3, Product=1, SerialNumber=2
[ 1.384688] usb 1-6: Product: EasyCamera
[ 1.384689] usb 1-6: Manufacturer: Chicony Electronics Co.,Ltd.
[ 1.384689] usb 1-6: SerialNumber: 0001
[ 1.400789] input: EasyCamera: EasyCamera as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/input/input15
[ 1.514536] usb 1-11: new full-speed USB device number 4 using xhci_hcd
[ 1.641309] usb 1-11: New USB device found, idVendor=8087, idProduct=0a2b, bcdDevice= 0.10
[ 1.641311] usb 1-11: New USB device strings: Mfr=0, Product=0, SerialNumber=0
守护进程日志：
$ journalctl -b0 -u bluetooth
-- Logs begin at Mon 2020-07-13 19:33:32 EEST, end at Thu 2020-07-16 18:16:15 EEST. --
Jul 16 18:16:04 saturn systemd[1]: Starting Bluetooth service...
Jul 16 18:16:04 saturn bluetoothd[7173]: Bluetooth daemon 5.54
Jul 16 18:16:04 saturn systemd[1]: Started Bluetooth service.
Jul 16 18:16:04 saturn bluetoothd[7173]: Starting SDP server
Jul 16 18:16:04 saturn bluetoothd[7173]: Bluetooth management interface 1.16 initialized
rfkill：
$ rfkill list
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
注意，bluetoothctl什么都没显示：
$ bluetoothctl
Agent registered
[bluetooth]# list
[bluetooth]#
相关部分lshw：
*-pci
description: Host bridge
product: Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers
vendor: Intel Corporation
physical id: 100
bus info: pci@0000:00:00.0
version: 05
width: 32 bits
clock: 33MHz
configuration: driver=skl_uncore
resources: irq:0
*-pci:0
description: PCI bridge
product: Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16)
vendor: Intel Corporation
physical id: 1
bus info: pci@0000:00:01.0
version: 05
width: 32 bits
clock: 33MHz
capabilities: pci pm msi pciexpress normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:120
*-display
description: VGA compatible controller
product: HD Graphics 630
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:125 memory:a0000000-a0ffffff memory:90000000-9fffffff ioport:4000(size=64) memory:c0000-dffff
*-usb
description: USB controller
product: 100 Series/C230 Series Chipset Family USB 3.0 xHCI Controller
vendor: Intel Corporation
physical id: 14
bus info: pci@0000:00:14.0
version: 31
width: 64 bits
clock: 33MHz
capabilities: pm msi xhci bus_master cap_list
configuration: driver=xhci_hcd latency=0
resources: irq:129 memory:a1400000-a140ffff
*-usbhost:0
product: xHCI Host Controller
vendor: Linux 5.7.8-gentoo xhci-hcd
physical id: 0
bus info: usb@1
logical name: usb1
version: 5.07
capabilities: usb-2.00
configuration: driver=hub slots=16 speed=480Mbit/s
*-usb:0
description: Keyboard
product: USB Receiver
vendor: Logitech
physical id: 3
bus info: usb@1:3
version: 12.09
capabilities: usb-2.00
configuration: driver=usbhid maxpower=98mA speed=12Mbit/s
*-usb:1
description: Video
product: EasyCamera
vendor: Chicony Electronics Co.,Ltd.
physical id: 6
bus info: usb@1:6
version: 87.40
serial: 0001
capabilities: usb-2.00
configuration: driver=uvcvideo maxpower=500mA speed=480Mbit/s
*-usb:2 UNCLAIMED
description: Bluetooth wireless interface
vendor: Intel Corp.
physical id: b
bus info: usb@1:b
version: 0.10
capabilities: bluetooth usb-2.00
configuration: maxpower=100mA speed=12Mbit/s
请注意：
*-usb:2 未认领
对于下一步去哪里有什么建议吗？
答案1
我发现了这个问题。
缺少所需的内核模块：
bnep
btintel
hci_uart
以及内核配置：
CONFIG_BT_BCM=m
CONFIG_BT_RTL=m
CONFIG_BT_HCIBTUSB=m
CONFIG_BT_HCIBTUSB_BCM=y
CONFIG_BT_HCIBTUSB_RTL=y
以下是我采取的步骤。
获取产品 ID
$ lsusb -v -d 8087:0a2b 2>/dev/null | grep idProduct | awk '{print $2}'
0x0a2b
查找内核配置
$ grep -R 0x0a2b /usr/src/linux/ | grep driver_info | awk -F'=' '{print $2}'
BTUSB_INTEL_NEW |
打开内核配置（make menuconfig），搜索BTUSB关键字，并启用合适的模块，记住供应商的描述：
