Não é possível acessar a internet via wireless pelo adaptador de rede sem fio 802.11ac da QCA6174 no Ubuntu 14.04

Question

Não consigo usar o Wi-Fi no Dell Latitude 3470 no Ubuntu 14.04. De longe, eu nem mesmo consigo varrer a possível lista do Wifi, mas outros dispositivos podem fazer a varredura.

zelongg@zelongg:~$ sudo lshw -class network
[sudo] password for zelongg: 
  *-network DISABLED      
       description: Wireless interface
       product: QCA6174 802.11ac Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlan0
       version: 32
       serial: 28:56:5a:54:4a:93
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath10k_pci driverversion=4.2.0-27-generic firmware=WLAN.RM.2.0-00180-QCARMSWPZ-1 latency=0 link=no multicast=yes wireless=IEEE 802.11abgn
       resources: irq:282 memory:d5000000-d51fffff
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: eth0
       version: 0c
       serial: 98:40:bb:25:5f:55
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168g-2_0.0.1 02/06/13 ip=10.7.6.138 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
       resources: irq:127 ioport:d000(size=256) memory:d5204000-d5204fff memory:d5200000-d5203fff
zelongg@zelongg:~$ iwconfig
eth0      no wireless extensions.

wlan0     IEEE 802.11abgn  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=0 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on

lo        no wireless extensions.

zelongg@zelongg:~$ rfkill list
0: dell-wifi: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
2: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
zelongg@zelongg:~$ lspci -knn | grep Net -A3
02:00.0 Network controller [0280]: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter [168c:003e] (rev 32)
    Subsystem: Dell Device [1028:0310]
    Kernel driver in use: ath10k_pci
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c)
zelongg@zelongg:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 14.04.4 LTS
Release:    14.04
Codename:   trusty

Atualizado:

link

zelongg@zelongg:~$ cd /lib/firmware/ath10k/QCA6174/hw3.0
zelongg@zelongg:/lib/firmware/ath10k/QCA6174/hw3.0$ ls -la
total 816
drwxr-xr-x 2 root root 4096 2月 24 10:53 .
drwxr-xr-x 4 root root 4096 10月 9 17:03 ..
-rw-r--r-- 1 root root 8124 3月 21 2016 board.bin
-rw-r--r-- 1 root root 733784 3月 21 2016 firmware-4.bin
-rw-r--r-- 1 root root 79689 3月 21 2016 notice_ath10k_firmware-4.txt
zelongg@zelongg:/lib/firmware/ath10k/QCA6174/hw3.0$ sudo wget https://github.com/kvalo/ath10k-firmware/blob/master/QCA6174/hw3.0/board-2.bin
--2018-02-26 17:20:08-- https://github.com/kvalo/ath10k-firmware/blob/master/QCA6174/hw3.0/board-2.bin
Resolving github.com (github.com)... 192.30.253.113, 192.30.253.112
Connecting to github.com (github.com)|192.30.253.113|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Saving to: ‘board-2.bin’

  [ <=> ] 31,113 60.0KB/s in 0.5s

2018-02-26 17:20:10 (60.0 KB/s) - ‘board-2.bin’ saved [31113]

zelongg@zelongg:/lib/firmware/ath10k/QCA6174/hw3.0$ sudo mv /lib/firmware/ath10k/QCA6174/hw3.0/board.bin /lib/firmware/ath10k/QCA6174/hw3.0/board.bin.bak
zelongg@zelongg:/lib/firmware/ath10k/QCA6174/hw3.0$ sudo mv /lib/firmware/ath10k/QCA6174/hw3.0/board-2.bin /lib/firmware/ath10k/QCA6174/hw3.0/board.bin
zelongg@zelongg:/lib/firmware/ath10k/QCA6174/hw3.0$

zelongg@zelongg:~$ sudo lshw -class network
[sudo] password for zelongg:
  *-network
  description: Network controller
  product: QCA6174 802.11ac Wireless Network Adapter
  vendor: Qualcomm Atheros
  physical id: 0
  bus info: pci@0000:02:00.0
  version: 32
  width: 64 bits
  clock: 33MHz
  capabilities: pm msi pciexpress bus_master cap_list
  configuration: driver=ath10k_pci latency=0
  resources: irq:281 memory:d5000000-d51fffff
  *-network
  description: Ethernet interface
  product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
  vendor: Realtek Semiconductor Co., Ltd.
  physical id: 0
  bus info: pci@0000:03:00.0
  logical name: eth0
  version: 0c
  serial: 98:40:bb:25:5f:55
  size: 1Gbit/s
  capacity: 1Gbit/s
  width: 64 bits
  clock: 33MHz
  capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
  configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168g-2_0.0.1 02/06/13 ip=10.7.6.138 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
  resources: irq:127 ioport:d000(size=256) memory:d5204000-d5204fff memory:d5200000-d5203fff

mas não há opção Ativar Wi-Fi no menu suspenso

Então eu reverti isso. Tem a opção Ativar Wi-Fi no menu suspenso agora.

zelongg@zelongg:~$ sudo mv /lib/firmware/ath10k/QCA6174/hw3.0/board.bin /lib/firmware/ath10k/QCA6174/hw3.0/board-2.bin
[sudo] password for zelongg:
zelongg@zelongg:~$ sudo mv /lib/firmware/ath10k/QCA6174/hw3.0/board.bin.bak /lib/firmware/ath10k/QCA6174/hw3.0/board.bin

zelongg@zelongg:~$ sudo lshw -class network
[sudo] password for zelongg:
  *-network DISABLED
  description: Wireless interface
  product: QCA6174 802.11ac Wireless Network Adapter
  vendor: Qualcomm Atheros
  physical id: 0
  bus info: pci@0000:02:00.0
  logical name: wlan0
  version: 32
  serial: 28:56:5a:54:4a:93
  width: 64 bits
  clock: 33MHz
  capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
  configuration: broadcast=yes driver=ath10k_pci driverversion=4.2.0-42-generic firmware=WLAN.RM.2.0-00180-QCARMSWPZ-1 latency=0 link=no multicast=yes wireless=IEEE 802.11abgn
  resources: irq:282 memory:d5000000-d51fffff
  *-network
  description: Ethernet interface
  product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
  vendor: Realtek Semiconductor Co., Ltd.
  physical id: 0
  bus info: pci@0000:03:00.0
  logical name: eth0
  version: 0c
  serial: 98:40:bb:25:5f:55
  size: 1Gbit/s
  capacity: 1Gbit/s
  width: 64 bits
  clock: 33MHz
  capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
  configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168g-2_0.0.1 02/06/13 ip=10.7.6.138 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
  resources: irq:127 ioport:d000(size=256) memory:d5204000-d5204fff memory:d5200000-d5203fff

zelongg@zelongg:~$ iwconfig
^C
zelongg@zelongg:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 98:40:bb:25:5f:55
  inet addr:10.7.6.138 Bcast:10.7.255.255 Mask:255.255.0.0
  inet6 addr: fe80::9a40:bbff:fe25:5f55/64 Scope:Link
  UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
  RX packets:18755 errors:0 dropped:0 overruns:0 frame:0
  TX packets:809 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:1000
  RX bytes:1466748 (1.4 MB) TX bytes:89250 (89.2 KB)

lo Link encap:Local Loopback
  inet addr:127.0.0.1 Mask:255.0.0.0
  inet6 addr: ::1/128 Scope:Host
  UP LOOPBACK RUNNING MTU:65536 Metric:1
  RX packets:479 errors:0 dropped:0 overruns:0 frame:0
  TX packets:479 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:0
  RX bytes:80313 (80.3 KB) TX bytes:80313 (80.3 KB)

Atualizado 2:

zelongg@zelongg:~$ dmesg | grep ath10k
[ 1.593418] ath10k_pci 0000:02:00.0: enabling device (0000 -> 0002)
[ 1.600708] ath10k_pci 0000:02:00.0: pci irq msi-x interrupts 8 irq_mode 0 reset_mode 0
[ 1.820905] ath10k_pci 0000:02:00.0: Direct firmware load for ath10k/cal-pci-0000:02:00.0.bin failed with error -2
[ 1.823833] ath10k_pci 0000:02:00.0: Direct firmware load for ath10k/QCA6174/hw3.0/board-pci-168c:003e:1028:0310.bin failed with error -2
[ 1.823839] ath10k_pci 0000:02:00.0: failed to load spec board file, falling back to generic: -2
[ 1.827398] ath10k_pci 0000:02:00.0: Direct firmware load for ath10k/QCA6174/hw3.0/firmware-5.bin failed with error -2
[ 1.827403] ath10k_pci 0000:02:00.0: could not fetch firmware file 'ath10k/QCA6174/hw3.0/firmware-5.bin': -2
[ 4.013111] ath10k_pci 0000:02:00.0: qca6174 hw3.2 (0x05030000, 0x00340aff, 168c:003e:1028:0310 fallback) fw WLAN.RM.2.0-00180-QCARMSWPZ-1 api 4 htt 3.26 wmi 4 cal otp max_sta 32
[ 4.013118] ath10k_pci 0000:02:00.0: debug 0 debugfs 1 tracing 1 dfs 0 testmode 0

Atualização 3: Versão do Kernel:

zelongg@zelongg:~$ uname -r
4.2.0-42-generic

    

Answer 1

Depois de atualizar a versão do Ubuntu de 14.04 LTS para 16.04 LTS, tudo funciona bem.

    

Answer 2

Sugiro que você tente atualizar o firmware. Do terminal:

cd /tmp
wget http://mirrors.kernel.org/ubuntu/pool/main/l/linux-firmware/linux-firmware_1.169.2_all.deb
sudo dpkg -i linux*.deb

Reinicie e seu wireless deve estar funcionando.

    

Answer 3

Atualização de 26 de fevereiro de 1818:

Parece haver um bug antigo com o driver 14.04 e ath10k. Isso ainda não foi corrigido nos repositórios principais. Primeiro tente a sugestão do chili555. Se isso não funcionar, revise o relatório do bug e tente a correção lá. Resumidamente, o trabalho de correção de erros é:

sudo mkdir -p /lib/firmware/ath10k/QCA6174/hw3.0/

sudo rm /lib/firmware/ath10k/QCA6174/hw3.0/* 2> /dev/null

sudo wget -O /lib/firmware/ath10k/QCA6174/hw3.0/board.bin https://github.com/kvalo/ath10k-firmware/blob/master/QCA6174/hw3.0/board.bin?raw=true

sudo wget -O /lib/firmware/ath10k/QCA6174/hw3.0/board-2.bin https://github.com/kvalo/ath10k-firmware/blob/master/QCA6174/hw3.0/board-2.bin?raw=true

sudo wget -O /lib/firmware/ath10k/QCA6174/hw3.0/firmware-4.bin https://github.com/kvalo/ath10k-firmware/blob/master/QCA6174/hw3.0/firmware-4.bin_WLAN.RM.2.0-00180-QCARMSWPZ-1?raw=true

Você verá comentários meus no relatório de erros entre # 88 e # 93. O desenvolvedor aponta que estar no HWE (Hardware Enablement Stack) poderia ter corrigido automaticamente o problema no Ubuntu 16.04. Eu não tenho certeza sobre o Ubuntu 14.04.

Do meu ponto de vista, o problema com o HWE é que ele atualiza automaticamente os kernels para Metldown e Specter que causaram problemas para muitas pessoas:

Comentário # 95 no relatório de erros menciona:

just found the latest firmware is already in xenial-proposed linux-firmware (1.157.15) xenial; urgency=medium

Publicação original:

A saída de comando de: sudo lshw -class network mostra a placa Wifi da sua rede como "desativada". Na animação abaixo, o mesmo modelo de cartão é inicialmente mostrado como desativado. Em seguida, no menu da bandeja do sistema, o ícone Rede é clicado. No menu suspenso, a opção "Ativar WiFi" é clicada. Então, lshw é executado novamente e a placa Wi-Fi não está mais desativada: