未找到蓝牙 Ubuntu 20.04

Question

我在 Dell Inspiron 3470 上安装了 Ubuntu 20.04，但它无法识别蓝牙。戴尔页面上的硬件规格：389-BEHN：802.11bgn + 蓝牙 4.0、2.4 GHz、1x1。

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当我打开设置时，它显示：未找到蓝牙。插入适配器即可使用蓝牙。

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我努力了：

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sudo blueman-manager\nblueman-manager version 2.1.2 starting\nblueman-manager 16.22.15 ERROR    Manager:118 on_dbus_name_appeared: Default adapter not found, trying first available.\nblueman-manager 16.22.15 ERROR    Manager:122 on_dbus_name_appeared: No adapter(s) found, exiting\n

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没有其他驱动程序可供下载。

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附加信息：

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sudo lshw | grep -A 10 "blue"\n               capabilities: bluetooth usb-1.10\n               configuration: maxpower=100mA speed=12Mbit/s\n       *-usbhost:1\n            product: xHCI Host Controller\n            vendor: Linux 5.4.0-40-generic xhci-hcd\n            physical id: 1\n            bus info: usb@2\n            logical name: usb2\n            version: 5.04\n            capabilities: usb-3.10\n            configuration: driver=hub slots=8 speed=10000Mbit/s\n

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。

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dmesg |egrep -i "blue|fw|firm|hci" \n[    0.000000] [Firmware Bug]: TPM Final Events table missing or invalid\n[    0.522136] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver\n[    0.522138] ehci-pci: EHCI PCI platform driver\n[    0.522145] ehci-platform: EHCI generic platform driver\n[    0.522152] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver\n[    0.522153] ohci-pci: OHCI PCI platform driver\n[    0.522159] ohci-platform: OHCI generic platform driver\n[    0.522163] uhci_hcd: USB Universal Host Controller Interface driver\n[    0.522362] xhci_hcd 0000:00:14.0: xHCI Host Controller\n[    0.522367] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 1\n[    0.523468] xhci_hcd 0000:00:14.0: hcc params 0x200077c1 hci version 0x110 quirks 0x0000000000009810\n[    0.523475] xhci_hcd 0000:00:14.0: cache line size of 64 is not supported\n[    0.523659] usb usb1: Product: xHCI Host Controller\n[    0.523660] usb usb1: Manufacturer: Linux 5.4.0-40-generic xhci-hcd\n[    0.525174] xhci_hcd 0000:00:14.0: xHCI Host Controller\n[    0.525177] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2\n[    0.525178] xhci_hcd 0000:00:14.0: Host supports USB 3.1 Enhanced SuperSpeed\n[    0.525206] usb usb2: Product: xHCI Host Controller\n[    0.525207] usb usb2: Manufacturer: Linux 5.4.0-40-generic xhci-hcd\n[    0.813299] ahci 0000:00:17.0: version 3.0\n[    0.827290] ahci 0000:00:17.0: AHCI 0001.0301 32 slots 6 ports 6 Gbps 0xf impl SATA mode\n[    0.827291] ahci 0000:00:17.0: flags: 64bit ncq sntf pm clo only pio slum part ems deso sadm sds apst \n[    0.859458] usb 1-5: new full-speed USB device number 2 using xhci_hcd\n[    0.864068] scsi host0: ahci\n[    0.864329] scsi host1: ahci\n[    0.864538] scsi host2: ahci\n[    0.864744] scsi host3: ahci\n[    0.864851] scsi host4: ahci\n[    0.864950] scsi host5: ahci\n[    1.139466] usb 1-8: new high-speed USB device number 3 using xhci_hcd\n[    1.415443] usb 1-14: new full-speed USB device number 4 using xhci_hcd\n[    9.413222] Bluetooth: Core ver 2.22\n[    9.413232] Bluetooth: HCI device and connection manager initialized\n[    9.413234] Bluetooth: HCI socket layer initialized\n[    9.413235] Bluetooth: L2CAP socket layer initialized\n[    9.413237] Bluetooth: SCO socket layer initialized\n[    9.502605] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4)\n[   46.970961] Bluetooth: BNEP (Ethernet Emulation) ver 1.3\n[   46.970964] Bluetooth: BNEP filters: protocol multicast\n[   46.970972] Bluetooth: BNEP socket layer initialized\n[  191.667475] Lockdown: fwupd: /dev/mem,kmem,port is restricted; see man kernel_lockdown.7\n

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。

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dmesg | grep Bluetooth                                                                \xee\x82\xb2 \xe2\x9c\x94 \xe2\x94\x82 09:50:21 \xef\x80\x97  \xee\x82\xb4\n[    9.413222] Bluetooth: Core ver 2.22\n[    9.413232] Bluetooth: HCI device and connection manager initialized\n[    9.413234] Bluetooth: HCI socket layer initialized\n[    9.413235] Bluetooth: L2CAP socket layer initialized\n[    9.413237] Bluetooth: SCO socket layer initialized\n[   46.970961] Bluetooth: BNEP (Ethernet Emulation) ver 1.3\n[   46.970964] Bluetooth: BNEP filters: protocol multicast\n[   46.970972] Bluetooth: BNEP socket layer initialized\n

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以下命令不返回任何内容：

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sudo lspci | grep -A 10 "blue"\n

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。

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ls /sys/bus/sdio/drivers\n

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