Broadcom BCM4352：蓝牙无法连接

Question

为什么蓝牙无法连接？

蓝牙单元可以在 Debian 测试 (9.0 Stretch) 上找到但无法连接到其他设备。蓝牙适用于不同的操作系统。BIOS 设置允许无线。

安装了以下软件包：

• bluez-固件
• Broadcom-sta-common
• Broadcom-sta-dkms
• Broadcom-sta-source
• 固件-brcm80211
• 固件杂项非自由

$ sudo dmesg | grep -i blue
[   18.086647] Bluetooth: Core ver 2.22
[   18.086660] Bluetooth: HCI device and connection manager initialized
[   18.086663] Bluetooth: HCI socket layer initialized
[   18.086664] Bluetooth: L2CAP socket layer initialized
[   18.086668] Bluetooth: SCO socket layer initialized
[   18.149652] Bluetooth: hci0: BCM: chip id 63
[   18.165659] Bluetooth: hci0: BCM20702A
[   18.166653] Bluetooth: hci0: BCM20702A1 (001.002.014) build 0000
[   18.176624] bluetooth hci0: firmware: failed to load brcm/BCM20702A1-13d3-3404.hcd (-2)
[   18.176665] bluetooth hci0: Direct firmware load for brcm/BCM20702A1-13d3-3404.hcd failed with error -2
[   18.176668] Bluetooth: hci0: BCM: Patch brcm/BCM20702A1-13d3-3404.hcd not found
[   18.553154] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   18.553156] Bluetooth: BNEP filters: protocol multicast
[   18.553160] Bluetooth: BNEP socket layer initialized
[   18.574361] Bluetooth: RFCOMM TTY layer initialized
[   18.574365] Bluetooth: RFCOMM socket layer initialized
[   18.574368] Bluetooth: RFCOMM ver 1.11

$ lsmod | grep wl
wl                   6443008  0
cfg80211              589824  1 wl

$ sudo modprobe -v broadcom-sta-dkms
modprobe: FATAL: Module broadcom-sta-dkms not found in directory /lib/modules/4.9.0-2-amd64

$ sudo dmesg | grep -i blu       
[   18.086647] Bluetooth: Core ver 2.22                                                                                        
[   18.086660] Bluetooth: HCI device and connection manager initialized                                                
[   18.086663] Bluetooth: HCI socket layer initialized
[   18.086664] Bluetooth: L2CAP socket layer initialized
[   18.086668] Bluetooth: SCO socket layer initialized
[   18.149652] Bluetooth: hci0: BCM: chip id 63
[   18.165659] Bluetooth: hci0: BCM20702A
[   18.166653] Bluetooth: hci0: BCM20702A1 (001.002.014) build 0000
[   18.176624] bluetooth hci0: firmware: failed to load brcm/BCM20702A1-13d3-3404.hcd (-2)
[   18.176665] bluetooth hci0: Direct firmware load for brcm/BCM20702A1-13d3-3404.hcd failed with error -2
[   18.176668] Bluetooth: hci0: BCM: Patch brcm/BCM20702A1-13d3-3404.hcd not found
[   18.553154] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   18.553156] Bluetooth: BNEP filters: protocol multicast
[   18.553160] Bluetooth: BNEP socket layer initialized
[   18.574361] Bluetooth: RFCOMM TTY layer initialized
[   18.574365] Bluetooth: RFCOMM socket layer initialized
[   18.574368] Bluetooth: RFCOMM ver 1.11

相关资源：

• BCM4352

• 维基百科

• Debian

Answer 1

您缺少蓝牙固件。

cd /lib/firmware/brcm
sudo wget https://github.com/winterheart/broadcom-bt-firmware/raw/master/brcm/BCM20702A1-13d3-3404.hcd
sudo modprobe -r btusb
sudo modprobe btusb

看看它是否有效