Como posso ativar a NIC sem fio Qualcomm Atheros com o Ubuntu 14.04?

Question

Eu comprei um Lenovo Z70-80 na semana passada e instalei o Ubuntu 14.04 Trusty Tahr. Eu estive nos fóruns desde que tentei encontrar uma razão pela qual meu adaptador sem fio não funciona. Funcionou sob o Windows 10. Ethernet funciona bem. Estou percebendo que talvez ainda não haja drivers para isso:

03: 00.0 Controlador de rede [0280]: Adaptador de rede sem fio Qualcomm Atheros QCA6174 802.11ac [168c: 003e] (rev 20)

Eu executei o script de informações sem fio que encontrei aqui , e estes são os resultados:

########## wireless info START ##########

Report from: 17 Nov 2015 23:44 EST -0500

Booted last: 17 Nov 2015 23:26 EST -0500

Script from: 27 Sep 2015 00:34 UTC +0000

##### release ###########################

Distributor ID: Ubuntu
Description:    Ubuntu 14.04.3 LTS
Release:        14.04
Codename:       trusty

##### kernel ############################

Linux 3.19.0-33-generic #38~14.04.1-Ubuntu SMP Fri Nov 6 18:17:28 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Parameters: ro, quiet, splash, vt.handoff=7

##### desktop ###########################

Ubuntu

##### lspci #############################

02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
        Subsystem: Lenovo Device [17aa:3819]
        Kernel driver in use: r8169

03:00.0 Network controller [0280]: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter [168c:003e] (rev 20)
        Subsystem: Lenovo Device [17aa:3044]

04:00.0 3D controller [0302]: NVIDIA Corporation GM108M [GeForce 840M] [10de:1341] (rev a2)

##### lsusb #############################

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 0cf3:e300 Atheros Communications, Inc. 
Bus 001 Device 003: ID 174f:14be Syntek 
Bus 001 Device 002: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

##### PCMCIA card info ##################

##### rfkill ############################

0: hci0: Bluetooth
        Soft blocked: yes
        Hard blocked: no
1: ideapad_wlan: Wireless LAN
        Soft blocked: no
        Hard blocked: no
2: ideapad_bluetooth: Bluetooth
        Soft blocked: yes
        Hard blocked: no

##### lsmod #############################

ideapad_laptop         20480  0 
sparse_keymap          16384  1 ideapad_laptop
mxm_wmi                16384  1 nouveau
wmi                    20480  2 mxm_wmi,nouveau

##### interfaces ########################

auto lo
iface lo inet loopback

##### ifconfig ##########################

eth0      Link encap:Ethernet  HWaddr <MAC 'eth0' [IF]>  
          inet addr:10.0.0.38  Bcast:10.0.0.255  Mask:255.255.255.0
          inet6 addr: 2601:147:0:6f47:<IP6 'eth0' [IF]>/64 Scope:Global
          inet6 addr: 2601:147:0:6f47:48f4:15bf:5b8a:9e86/64 Scope:Global
          inet6 addr: fe80::<IP6 'eth0' [IF]>/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:18440 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12281 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:16786797 (16.7 MB)  TX bytes:1558681 (1.5 MB)

##### iwconfig ##########################

eth0      no wireless extensions.

lo        no wireless extensions.

##### route #############################

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         10.0.0.1        0.0.0.0         UG    0      0        0 eth0
10.0.0.0        0.0.0.0         255.255.255.0   U     1      0        0 eth0

##### resolv.conf #######################

nameserver 127.0.1.1
search hsd1.md.comcast.net

##### network managers ##################

Installed:

        NetworkManager

Running:

root       908     1  0 23:26 ?        00:00:00 NetworkManager

##### NetworkManager info ###############

NetworkManager Tool

State: connected (global)

- Device: eth0  [Wired connection 1] -------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             connected
  Default:           yes
  HW Address:        <MAC 'eth0' [IF]>

  Capabilities:
    Carrier Detect:  yes
    Speed:           1000 Mb/s

  Wired Properties
    Carrier:         on

  IPv4 Settings:
    Address:         10.0.0.38
    Prefix:          24 (255.255.255.0)
    Gateway:         10.0.0.1

    DNS:             75.75.75.75
    DNS:             75.75.76.76

  IPv6 Settings:
    Address:         2601:147:0:6f47:48f4:15bf:5b8a:9e86
    Prefix:          64
    Gateway:         fe80::ea89:2cff:fef9:31e1

    Address:         2601:147:0:6f47:<IP6 'eth0' [IF]>
    Prefix:          64
    Gateway:         fe80::ea89:2cff:fef9:31e1

    Address:         fe80::<IP6 'eth0' [IF]>
    Prefix:          64
    Gateway:         fe80::ea89:2cff:fef9:31e1

    DNS:             2001:558:feed::1
    DNS:             2001:558:feed::2

##### NetworkManager.state ##############

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true

##### NetworkManager.conf ###############

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=false

##### NetworkManager profiles ###########

##### iw reg get ########################

Region: America/New_York (based on set time zone)

country 00:
        (2402 - 2472 @ 40), (6, 20)
        (2457 - 2482 @ 40), (6, 20), PASSIVE-SCAN
        (2474 - 2494 @ 20), (6, 20), NO-OFDM, PASSIVE-SCAN
        (5170 - 5250 @ 160), (6, 20), PASSIVE-SCAN
        (5250 - 5330 @ 160), (6, 20), DFS, PASSIVE-SCAN
        (5490 - 5730 @ 160), (6, 20), DFS, PASSIVE-SCAN

##### iwlist channels ###################

eth0      no frequency information.

lo        no frequency information.

##### iwlist scan #######################

Sorry, try again.
eth0      Interface doesn't support scanning.

lo        Interface doesn't support scanning.

##### module infos ######################

##### module parameters #################

##### /etc/modules ######################

lp
rtc

##### modprobe options ##################

[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci

[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac

[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off

[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211

[/etc/modprobe.d/mlx4.conf]
softdep mlx4_core post: mlx4_en

##### rc.local ##########################

exit 0

##### pm-utils ##########################

##### udev rules ########################

[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x10ec:0x8168 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'eth0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

##### dmesg #############################

[   20.849529] Bluetooth: hci0: don't support firmware rome 0x200
[   21.025627] r8169 0000:02:00.0 eth0: link down (repeated 2 times)
[   21.025680] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[   23.977440] r8169 0000:02:00.0 eth0: link up
[   23.977449] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

########## wireless info END ############

Obrigado antecipadamente.

    

Answer 1

O suporte a componentes é muito melhor do que costumava ser, e o Ubuntu, entre outros membros da comunidade, merece mais do que apenas um tapinha nas costas nesse sentido (falar sobre doações). A Qualcomm, juntamente com outros fabricantes, anunciou o firmware de fornecimento aberto para o seu hardware. No entanto, o suporte a cartões sem fio e gráficos (nvidia!) ainda pode ser escasso em máquinas mais recentes.
Se a conexão sem fio não funcionar, tente:

1. Atualize para uma distro com o kernel e os drivers mais recentes (às vezes usando um novo firmware com algum rmmod e modprobe irá fazer o truque). Para o QCA6174, a melhor coisa a fazer é atualizar para o Ubuntu 15.10 (você pode usar o atualizador de software Ubuntu em vez de instalar o 15.10 a partir do zero) pois ele tem o kernel 4.2 e ath10k firmware .

   Uma coisa estranha que pode acontecer após uma atualização é que o touchpad para de funcionar, geralmente resolvido desconectando e, em seguida, anexando o touchpad no terminal e / ou reinstalando o firmware, por exemplo. synaptics (ajuda pode ser encontrada em askubuntu).

   Em geral, ao tocar com o linux, uma boa idéia é ter um mouse USB e uma placa wireless USB.

2. Os backports podem ser uma solução muito rápida e conveniente para permitir que os kernels mais antigos funcionem com softwares que só suportam kernels mais novos. Você faria o download do backport para sua distro e depois os pacotes de firmware para o NIC. Sobre UbuntuBackports .

3. Se os itens acima não funcionarem, você pode comprar uma placa wireless USB dual band de baixo custo por menos de US $ 15 que tem suporte a Linux (veja o site oficial). Você pode usá-lo até que o kernel e o firmware do seu NIC sejam disponibilizados, e será muito útil tê-lo por perto caso alguma coisa quebre.

4. Se você precisar da porta USB ou tiver algum outro motivo para não usar 3, poderá obter um novo NIC com suporte a Linux. Os da Intel geralmente parecem ter um bom suporte antes mesmo de liberar o hardware.