Problemas com o Intel Centrino Wirless-N 1000

Question

Eu tenho tido problemas com a configuração do meu wifi no Ubuntu 12.04. Instalei na semana passada e, desde então, tive o mesmo problema que a maioria, pois a conexão nunca era estável e tinha um pop-up pedindo senha a cada 20 segundos. Eu tentei adicionar o options iwlagn 11n_disable=0 a /etc/modprobe.d/iwlagn.conf mas nunca consegui trabalhar. No processo de passar por métodos encontrados neste site, parece que tirei o cartão wifi.

Agora tenho uma rede não reivindicada para wlan0 e não é vista em iwconfig .

$ lspci

00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b5)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b5)
00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b5)
00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 6 (rev b5)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation HM67 Express Chipset Family LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
01:00.0 VGA compatible controller: NVIDIA Corporation Device 124d (rev a1)
03:00.0 Network controller: Intel Corporation Centrino Wireless-N 1000
04:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)
0a:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)

$ sudo lshw -C network

  *-network UNCLAIMED     
   description: Network controller
   product: Centrino Wireless-N 1000
   vendor: Intel Corporation
   physical id: 0
   bus info: pci@0000:03:00.0
   version: 00
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress cap_list
   configuration: latency=0
   resources: memory:f3b00000-f3b01fff
  *-network
   description: Ethernet interface
   product: RTL8111/8168B PCI Express Gigabit Ethernet controller
   vendor: Realtek Semiconductor Co., Ltd.
   physical id: 0
   bus info: pci@0000:0a:00.0
   logical name: eth0
   version: 06
   serial: 84:8f:69:b9:40:bc
   size: 100Mbit/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=rtl_nic/rtl8168e-2.fw ip=192.168.1.80 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
   resources: irq:50 ioport:2000(size=256) memory:f3004000-f3004fff memory:f3000000-f3003fff

$ iwconfig

lo        no wireless extensions.

eth0      no wireless extensions.

    

Answer 1

Eu indico uma possível correção para isso no post link , estou copiando a resposta abaixo:

Eu tenho um Dell XPS 17 (l702x) com um n-1000. Eu gostaria de trabalhar com o Ubuntu 12.04 (uma vez instalado). Então, emprestando muito do este post :

A correção parece envolver o downgrade do firmware do n-1000.

Por favor, faça o downgrade do firmware com iwlwifi-1000-ucode-128.50.3.1.tgz (para facilitar, salve-o em sua área de trabalho). Você pode clicar com o botão direito do mouse e selecionar "Extrair" ou emitir o seguinte em um terminal:

tar xzvf ~/Desktop/iwlwifi-1000-ucode-128.50.3.1.tgz 

Novamente, no terminal, faça o backup do firmware atual:

sudo mv /lib/firmware/iwlwifi-1000-5.ucode /lib/firmware/iwlwifi-1000-5.bak

Copie agora o firmware transferido:

cd Desktop/iwlwifi-1000-ucode-128.50.3.1/
cp iwlwifi-1000-3.ucode iwlwifi-1000-5.ucode
sudo cp iwlwifi-1000-5.ucode /lib/firmware
sudo modprobe -r iwlagn
sudo modprobe iwlagn

Agora vamos ver o que aconteceu sob o capô:

dmesg | tail -n20

Isso foi testado e confirmado na postagem original e é considerado uma correção permanente (ou seja, ainda está funcionando após uma reinicialização).

boa sorte!

Felicidades

Rich