Eu tenho uma placa wlan da Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (encontrada via lspci sob 03: 00.0 Controlador de rede :) no meu Lenovo T420 que tem win7 / Ubuntu 16.04 LTS dualboot.
Atualmente, a WLAN não funciona no meu sistema operacional Ubuntu16.04, enquanto a WLAN funciona perfeitamente sob as janelas, portanto, excluo danos no cartão. O problema específico é se eu clicar no símbolo da Internet (canto superior direito, à esquerda dos sinais que exibem Bluetooth e o layout de teclado do país que estou usando) Não consigo encontrar nenhum dos WIFIs em volta do meu laptop que posso encontrar sem qualquer problema no win7. Eu concluo que deve haver algo errado desde que eu lembro de usar um sistema Ubuntu alguns anos atrás que também encontrava conexões WIFI automaticamente.
Descobri que a pequena lâmpada WLAN na parte inferior do monitor do laptop geralmente não estava acesa, concluí que a placa não estava ativada.
ifconfig entregue (sem Ethernet conectada):
enp0s25 Link encap:Ethernet HWaddr 00:21:cc:6c:57:c4
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:14951 errors:0 dropped:0 overruns:0 frame:0
TX packets:13581 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:9938054 (9.9 MB) TX bytes:1650168 (1.6 MB)
Interrupt:20 Memory:f2600000-f2620000
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:9376 errors:0 dropped:0 overruns:0 frame:0
TX packets:9376 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:1040510 (1.0 MB) TX bytes:1040510 (1.0 MB)
Eu sabia de antemão que a interface wlp3s0 deveria estar ativa. Então eu verifiquei se está em iwlconfig (sem Ethernet conectada):
enp0s25 no wireless extensions.
lo no wireless extensions.
wlp3s0 IEEE 802.11abgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=15 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Eu o ativei usando:
sudo ifconfig wlp3s0 up
ifconfig exibido da mesma forma que antes, mas adicionalmente:
wlp3s0 Link encap:Ethernet HWaddr 08:11:96:25:81:e0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Eu verifiquei com nmcli-g :
STATE CONNECTIVITY WIFI-HW WIFI WWAN-HW WWAN
disconnected none enabled enabled enabled enabled
A placa deve ser suportada pelo meu kernel atual (encontrado via uname -a : Linux isofruit-ThinkPad-T420 4.4.0-22-genérico # 40-Ubuntu SMP Thu 12 de maio 22:03:46 UTC 2016 x86_64 x86_64 x86_64 GNU / Linux) de tudo o que eu encontrei, significando que o driver deveria estar lá.
$ lsmod | grep iwlagn
não retorna nada. Modprobe no iwlagn e dmesg me dão:
$ sudo modprobe iwlagn
modprobe: FATAL: Module iwlagn not found in directory /lib/modules/4.4.0-22-generic
$ dmesg | grep -i iwl
> [ 7.061277] iwlwifi 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control
[ 7.066591] iwlwifi 0000:03:00.0: loaded firmware version 18.168.6.1 op_mode iwldvm
[ 7.103547] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUG disabled
[ 7.103551] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUGFS enabled
[ 7.103553] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TRACING enabled
[ 7.103556] iwlwifi 0000:03:00.0: Detected Intel(R) Centrino(R) Advanced-N 6205 AGN, REV=0xB0
[ 7.103655] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 7.135783] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[ 7.446974] iwlwifi 0000:03:00.0 wlp3s0: renamed from wlan0
[ 1197.242686] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 1197.242927] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 1197.243020] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[ 1197.525577] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 1197.525810] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 1197.525901] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[ 1456.897367] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 1456.897637] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 1456.897739] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[ 1457.179161] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 1457.179419] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 1457.179591] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[ 3024.765374] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 3024.765672] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 3024.765777] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[ 3025.037457] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 3025.037730] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 3025.037833] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[ 3162.486526] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 3162.486837] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 3162.486943] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[ 3162.768909] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 3162.769163] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 3162.769266] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
Mais sudo lshw -C network retorna:
*-network
description: Ethernet interface
product: 82579LM Gigabit Network Connection
vendor: Intel Corporation
physical id: 19
bus info: pci@0000:00:19.0
logical name: enp0s25
version: 04
serial: 00:21:cc:6c:57:c4
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.13-3 latency=0 link=no multicast=yes port=twisted pair
resources: irq:25 memory:f2600000-f261ffff memory:f262b000-f262bfff ioport:5080(size=32)
*-network
description: Wireless interface
product: Centrino Advanced-N 6205 [Taylor Peak]
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlp3s0
version: 34
serial: 08:11:96:25:81:e0
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=4.4.0-22-generic firmware=18.168.6.1 latency=0 link=no multicast=yes wireless=IEEE 802.11abgn
resources: irq:28 memory:f2500000-f2501fff
Verificar se há redes retornadas:
$ iwlist scan
enp0s25 Interface doesn't support scanning.
lo Interface doesn't support scanning.
wlp3s0 No scan results
sudo rfkill entregue:
$sudo rfkill list
0: tpacpi_bluetooth_sw: Bluetooth
Soft blocked: no
Hard blocked: no
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
3: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
Infelizmente, não consegui encontrar nenhuma solução para o meu problema, pois os outros tinham um problema de hardware ou não conseguiam uma solução para o problema. Todos os dados acima foram obtidos enquanto o cabo Ethernet não estava conectado.
Agradecemos antecipadamente por todos os comentários / respostas! Felicidades, Isofruit