蓝牙 HSP/HFP 不工作，但 A2DP 是

Question

我有一个 Broadcom 内置蓝牙适配器。它是模型BCM20702A0 ( Vendor=0a5c ProdID=21e1 Rev=01.12) 我能够运行 A2DP 功能，但不能运行 HSP/HFP 模式。我尝试了不同的固件和不同的配置，/etc/bluetooth/audio.conf但没有运气。有谁知道我能做什么？我搜索并搜索了谷歌并尝试了两个小时的各种事情。以为我会给你大师一试。以下是我的系统详细信息，如果您需要其他任何信息，请告诉我。

dylan@laptop:~$ uname -a
Linux laptop 3.19.0-20-generic #20-Ubuntu SMP Fri May 29 10:10:47 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux


dylan@laptop:~$ dmesg | grep Bluetooth
[    4.179038] Bluetooth: Core ver 2.20
[    4.179051] Bluetooth: HCI device and connection manager initialized
[    4.179054] Bluetooth: HCI socket layer initialized
[    4.179056] Bluetooth: L2CAP socket layer initialized
[    4.179060] Bluetooth: SCO socket layer initialized
[    5.501272] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    5.501275] Bluetooth: BNEP filters: protocol multicast
[    5.501281] Bluetooth: BNEP socket layer initialized
[    5.508181] Bluetooth: RFCOMM TTY layer initialized
[    5.508188] Bluetooth: RFCOMM socket layer initialized
[    5.508193] Bluetooth: RFCOMM ver 1.11

USB-DEVICES...
T:  Bus=04 Lev=02 Prnt=02 Port=05 Cnt=01 Dev#=  3 Spd=12  MxCh= 0
D:  Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=0a5c ProdID=21e1 Rev=01.12
S:  Manufacturer=Broadcom Corp
S:  Product=BCM20702A0
S:  SerialNumber=083E8E9B280C
C:  #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb
I:  If#= 1 Alt= 2 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb
I:  If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
I:  If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none)


dylan@laptop:~$ dkms status; uname -a
bcmwl, 6.30.223.248+bdcom, 3.19.0-16-generic, x86_64: installed
bcmwl, 6.30.223.248+bdcom, 3.19.0-18-generic, x86_64: installed
bcmwl, 6.30.223.248+bdcom, 3.19.0-20-generic, x86_64: installed
bcmwl, 6.30.223.248+bdcom, 3.19.0-21-generic, x86_64: installed
vboxhost, 4.3.28, 3.19.0-16-generic, x86_64: installed
vboxhost, 4.3.28, 3.19.0-18-generic, x86_64: installed
vboxhost, 4.3.28, 3.19.0-20-generic, x86_64: installed
vboxhost, 4.3.28, 3.19.0-21-generic, x86_64: installed
Linux laptop 3.19.0-21-generic #21-Ubuntu SMP Sun Jun 14 18:31:11 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux


dylan@laptop:~$ dmesg | grep -i bluetooth; dmesg | grep firmware
[    4.085160] Bluetooth: Core ver 2.20
[    4.085171] Bluetooth: HCI device and connection manager initialized
[    4.085175] Bluetooth: HCI socket layer initialized
[    4.085176] Bluetooth: L2CAP socket layer initialized
[    4.085181] Bluetooth: SCO socket layer initialized
[    4.109764] bluetooth hci0: Direct firmware load for brcm/BCM20702A0-0a5c-21e1.hcd failed with error -2
[    4.109773] Bluetooth: hci0: BCM: patch brcm/BCM20702A0-0a5c-21e1.hcd not found
[    5.332794] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    5.332797] Bluetooth: BNEP filters: protocol multicast
[    5.332803] Bluetooth: BNEP socket layer initialized
[    5.346411] Bluetooth: RFCOMM TTY layer initialized
[    5.346419] Bluetooth: RFCOMM socket layer initialized
[    5.346425] Bluetooth: RFCOMM ver 1.11
[    4.109764] bluetooth hci0: Direct firmware load for brcm/BCM20702A0-0a5c-21e1.hcd failed with error -2

Answer 1

我会试试这个：

wget https://www.dropbox.com/s/owropuric6iz898/BCM20702A0-05ac-21e1.hcd
sudo cp BCM20702A0-05ac-21e1.hcd /lib/firmware/brcm/BCM20702A0-0a5c-21e1.hcd
sudo modprobe -r btusb
sudo modprobe btusb

然后检查dmesg | tail任何信息：

sudo apt-get install linux-headers-$(uname -r) build-essential
wget https://www.dropbox.com/s/xu80svavlazttaf/bluetooth-3.19.tar.gz
tar xpvf bluetooth-3.19.tar.gz
cd bluetooth
cp /boot/config-$(uname -r) .config
cp /usr/src/linux-headers-$(uname -r)/Module.symvers Module.symvers
make -C /lib/modules/$(uname -r)/build M=$PWD modules
sudo cp btusb.ko /lib/modules/$(uname -r)/kernel/drivers/bluetooth/
sudo modprobe -r btusb
sudo modprobe btusb

看看它是否有效

内核更新后，您将丢失 HSP/HFP。发生这种情况时，您应该这样做：

cd bluetooth
make -C /lib/modules/$(uname -r)/build M=$PWD clean
cp /boot/config-$(uname -r) .config
cp /usr/src/linux-headers-$(uname -r)/Module.symvers Module.symvers
make -C /lib/modules/$(uname -r)/build M=$PWD modules
sudo cp btusb.ko /lib/modules/$(uname -r)/kernel/drivers/bluetooth/
sudo modprobe -r btusb
sudo modprobe btusb