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在 ubuntu 18.02 上，任何蓝牙设备都找不到蓝牙，反之亦然

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在 ubuntu 18.02 上，任何蓝牙设备都找不到蓝牙，反之亦然

当我运行此命令时：dmesg | egrep -i 'blue|firm'，我得到以下结果：

[    1.191428] Spectre V2 : Enabling Restricted Speculation for firmware calls
[    2.305017] battery: [Firmware Bug]: battery: (dis)charge rate invalid.
[   33.326025] Bluetooth: Core ver 2.22
[   33.326063] Bluetooth: HCI device and connection manager initialized
[   33.326067] Bluetooth: HCI socket layer initialized
[   33.326070] Bluetooth: L2CAP socket layer initialized
[   33.326073] Bluetooth: SCO socket layer initialized
[   33.706669] Bluetooth: hci0: BCM: chip id 70
[   33.707664] Bluetooth: hci0: BCM: features 0x06
[   33.723673] Bluetooth: hci0: mediateur-HP-250-G4-Notebook-PC
[   33.724668] Bluetooth: hci0: BCM43142A0 (001.001.011) build 0000
[   34.463237] bluetooth hci0: Direct firmware load for brcm/BCM43142A0-0a5c-216d.hcd failed with error -2
[   34.463242] Bluetooth: hci0: BCM: Patch brcm/BCM43142A0-0a5c-216d.hcd not found
[   35.722662] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   35.722664] Bluetooth: BNEP filters: protocol multicast
[   35.722669] Bluetooth: BNEP socket layer initialized
[   36.489036] Bluetooth: hci0: command 0x1003 tx timeout
[   36.489696] Bluetooth: hci0: unexpected event for opcode 0x1003
[  157.688134] Bluetooth: RFCOMM TTY layer initialized
[  157.688142] Bluetooth: RFCOMM socket layer initialized
[  157.688152] Bluetooth: RFCOMM ver 1.11
[  198.002092] audit: type=1107 audit(1632820689.262:84): pid=952 uid=103 auid=4294967295 ses=4294967295 msg='apparmor="DENIED" operation="dbus_method_call"  bus="system" path="/" interface="org.freedesktop.DBus.ObjectManager" member="GetManagedObjects" mask="send" name="org.bluez" pid=2189 label="snap.skype.skype" peer_pid=1044 peer_label="unconfined"
[  934.928635] Bluetooth: hci0: command 0x1003 tx timeout
[  934.929223] Bluetooth: hci0: unexpected event for opcode 0x1003

答案1

您需要获取蓝牙设备的正确固件才能使其正常工作。幸运的是，这并不太难。

您需要执行以下操作：

  1. 下载来自 GitHub 的 Broadcom 固件
  2. 打开终端并将文件复制到适当位置： 
    sudo cp ~/Downloads/BCM43142A0-0a5c-216d.hcd /lib/firmware/brcm/BCM43142A0-0a5c-216d.hcd
    笔记：如果您没有将文件下载到下载目录，请务必更改源位置。
  3. 关闭计算机
  4. 重启计算机

这应该会给你一个可以正常工作的蓝牙设备。

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