我正在尝试在 Xubuntu 14.04 下使用蓝牙适配器（在 lsusb 中称为Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)，见下文），但我的系统从未识别它。
我读到使用 hid2hci 可能会有帮助，但为此，我需要找到确切的设备路径（显然应该在 /sys/ 中的某个地方找到）。我如何找到该设备的路径？
lsusb 输出：
Bus 001 Device 004: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 004: ID 0a5c:4503 Broadcom Corp. Mouse (Boot Interface Subclass)
Bus 004 Device 003: ID 0a5c:4502 Broadcom Corp. Keyboard (Boot Interface Subclass)
Bus 004 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 046d:c51b Logitech, Inc. V220 Cordless Optical Mouse for Notebooks
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
lspci 输出：
00:00.0 Host bridge: Intel Corporation 4 Series Chipset DRAM Controller (rev 03)
00:01.0 PCI bridge: Intel Corporation 4 Series Chipset PCI Express Root Port (rev 03)
00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 01)
00:1c.1 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 2 (rev 01)
00:1c.2 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 3 (rev 01)
00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 (rev 01)
00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 (rev 01)
00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 (rev 01)
00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 (rev 01)
00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)
00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01)
00:1f.2 IDE interface: Intel Corporation NM10/ICH7 Family SATA Controller [IDE mode] (rev 01)
00:1f.3 SMBus: Intel Corporation NM10/ICH7 Family SMBus Controller (rev 01)
01:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce 210] (rev a2)
01:00.1 Audio device: NVIDIA Corporation High Definition Audio Controller (rev a1)
03:00.0 Ethernet controller: Qualcomm Atheros AR8131 Gigabit Ethernet (rev c0)
05:00.0 Ethernet controller: Qualcomm Atheros AR5212/AR5213 Wireless Network Adapter (rev 01)
lsmod 输出：
fred@fred-xubuntu:~$ lsmod | grep bt
btusb 32412 0
bluetooth 395423 11 bnep,btusb,rfcomm
fred@fred-xubuntu:~$ lsmod | grep bluetooth
bluetooth 395423 11 bnep,btusb,rfcomm
使用 hid2hci 的一些尝试：
fred@fred-xubuntu:~$ /lib/udev/hid2hci --method=logitech-hid --devpath=/devices/pci0000:00/0000:00:1d.2/usb4/4-2/4-2.1/4-2.1:1.0
error: could not find hiddev device node
fred@fred-xubuntu:~$ /lib/udev/hid2hci --method=logitech-hid --devpath=/devices/pci0000:00/0000:00:1d.2/usb4/4-2/4-2.2/4-2.2:1.0
error: could not find hiddev device node
顺便说一句，我读到过有一种方法可以通过在 Windows 上进行一些调整来使蓝牙适配器工作，但我更想知道是否有一种方法可以仅依靠 Linux 来做到这一点。
答案1
我在安装 Win7x64 和 Ubuntu 14.04 双启动系统时遇到了同样的问题。我和你一样有 Broadcom Corp. BCM2046B1 USB 2.0 Hub。
我启动了 Windows 并打开了蓝牙适配器。启动 Ubuntu 后，我看到了蓝牙。
我至今还无法解释原因。