Início / computer / Perguntas / 1524536
Accepted
stdcerr
Asked: 2020-02-12 08:02:36 +0800 CST

incapaz de encontrar e configurar o adaptador usb

  • 772

Eu tenho um novo adaptador Bluetooth (conectável, modelo USB-BT4LE) que afirma que funcionaria com kernels Linux 3.0.34 e superiores e estou executando 5.2.2 com arch. Eu instalei bluez, bluez-utilsmas o aplicativo Adaptador Bluetooth diz "Nenhum adaptador Bluetooth foi encontrado". enquanto eu pego

$ dmesg | grep -i blue
[   13.787662] Bluetooth: Core ver 2.22
[   13.787677] Bluetooth: HCI device and connection manager initialized
[   13.787681] Bluetooth: HCI socket layer initialized
[   13.787682] Bluetooth: L2CAP socket layer initialized
[   13.787685] Bluetooth: SCO socket layer initialized
[   14.135558] Bluetooth: hci0: BCM: chip id 63
[   14.136551] Bluetooth: hci0: BCM: features 0x07
[   14.152549] Bluetooth: hci0: BCM20702A
[   14.153553] Bluetooth: hci0: BCM20702A1 (001.002.014) build 0000
[   14.248731] bluetooth hci0: Direct firmware load for brcm/BCM20702A1-0a5c-21e8.hcd failed with error -2
[   14.248735] Bluetooth: hci0: BCM: Patch brcm/BCM20702A1-0a5c-21e8.hcd not found

parece que algo foi reconhecido, mas como posso configurá-lo (e conectar meus dispositivos)?

Obrigado!

Atualização :

Depois de conectar o adaptador, vejo o seguinte no dmesg:

[ 7783.692990] bluetooth hci0: Direct firmware load for brcm/BCM20702A1-0a5c-21e8.hcd failed with error -2
[ 7783.692993] Bluetooth: hci0: BCM: Patch brcm/BCM20702A1-0a5c-21e8.hcd not found
[ 7788.617982] audit: type=1131 audit(1581476791.719:133): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'

Baseado em https://support.plugable.com/t/need-bcm20702a1-0a5c-21e8/8803/2 procurou firmware no computador. $ sudo find / -name "*BCM2070*"infelizmente também não produz nenhum resultado.

Encontrei https://www.linuxsecrets.com/2840-enable-bluetooth-on-linux que basicamente instrui a baixar https://s3.amazonaws.com/plugable/bin/fw-0a5c_21e8.hcd e armazená-lo no /lib/firmware/brcm/qual Eu fiz, reconectei o dongle e obtive:

[ 8545.828783] usb 4-1.8: new full-speed USB device number 28 using ehci-pci
[ 8545.933009] usb 4-1.8: New USB device found, idVendor=0a5c, idProduct=21e8, bcdDevice= 1.12
[ 8545.933013] usb 4-1.8: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 8545.933015] usb 4-1.8: Product: BCM20702A0
[ 8545.933017] usb 4-1.8: Manufacturer: Broadcom Corp
[ 8545.933019] usb 4-1.8: SerialNumber: 5CF370984D12
[ 8545.981571] audit: type=1130 audit(1581477549.083:146): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 8546.044020] Bluetooth: hci0: BCM: chip id 63
[ 8546.045016] Bluetooth: hci0: BCM: features 0x07
[ 8546.061014] Bluetooth: hci0: BCM20702A
[ 8546.061981] Bluetooth: hci0: BCM20702A1 (001.002.014) build 0000
[ 8546.904154] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1338
[ 8546.920998] Bluetooth: hci0: Broadcom Bluetooth Device

em dmesgque parece bom, mas isso ainda trava:

$ bluetoothctl 
Waiting to connect to bluetoothd...

e quando abro Bluetooth Adaptersno meu K-Menu, ainda diz: "Nenhum adaptador Bluetooth foi encontrado".

Hmm, lsusbme dá isso:

$ lsusb
Bus 004 Device 028: ID 0a5c:21e8 Broadcom Corp. BCM20702A0 Bluetooth 4.0
Bus 004 Device 004: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 004 Device 025: ID 1004:631c LG Electronics, Inc. G2/Optimus Android Phone [MTP mode]
Bus 004 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 046d:c215 Logitech, Inc. Extreme 3D Pro
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
$
linux usb

2 respostas

  1. Best Answer

    OK eu entendi,

    sudo systemctl status bluetooth

    me mostrou que o serviço bluetooth não está rodando na minha máquina, então eu comecei com

    $ sudo systemctl start bluetooth

    e certificando-se de que seja ativado após uma reinicialização, também identifiquei:

    sudo systemctl enable bluetooth

    agora mostra meu adaptador!

    • 2

  2. Você também pode obter seu firmware aqui, se não conseguir encontrá-lo.

    https://github.com/winterheart/broadcom-bt-firmware/tree/master/brcm

    • 0

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