Problema WLAN: (wlan0 / wireless): associação demorou muito, falha na ativação

Question

Eu tenho um laptop com

• Intel Corporation Wireless 3160 (rev 83); Versão do Firmare 25.17.12.0

Eu vejo a WLAN e posso inserir minha senha. Apesar da entrada repetida da senha e da inspeção visual da senha, nenhuma conexão é estabelecida.

Não há filtragem de MAC no roteador e todos os (novos) dispositivos são permitidos.

Eu instalei o firmware do Linux Wireless , antes de testar a rede com o firmware da instalação do Ubuntu.

Como posso resolver o problema?

Actualização 2015-05-30 22:34

Eu criei um ponto de acesso com meu smartphone. O mesmo problema.

Actualização 2015-05-30 23:20

IPv6 desativado, mesmo problema

$ cat /proc/sys/net/ipv6/conf/all/disable_ipv6
1

$ ip a | grep inet6
*no output*

Actualização 2015-05-31 17:26

$ journalctl -u NetworkManager
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0) starting connection 'Dragonlance'
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
Mai 31 17:25:11 fizban NetworkManager[692]: <info> (wlan0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
Mai 31 17:25:11 fizban NetworkManager[692]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0]
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0/wireless): access point 'Dragonlance' has security, but secrets are required.
Mai 31 17:25:11 fizban NetworkManager[692]: <info> (wlan0): device state change: config -> need-auth (reason 'none') [50 60 0]
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
Mai 31 17:25:11 fizban NetworkManager[692]: <info> (wlan0): device state change: need-auth -> prepare (reason 'none') [60 40 0]
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
Mai 31 17:25:11 fizban NetworkManager[692]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0]
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0/wireless): connection 'Dragonlance' has security, and secrets exist.  No new secrets needed.
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Config: added 'ssid' value 'Dragonlance'
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Config: added 'scan_ssid' value '1'
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Config: added 'key_mgmt' value 'WPA-PSK'
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Config: added 'psk' value '<omitted>'
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Mai 31 17:25:11 fizban NetworkManager[692]: <warn> Couldn't disconnect supplicant interface: This interface is not connected.
Mai 31 17:25:11 fizban NetworkManager[692]: <warn> Couldn't disconnect supplicant interface: This interface is not connected.
Mai 31 17:25:11 fizban NetworkManager[692]: <info> Config: set interface ap_scan to 1
Mai 31 17:25:36 fizban NetworkManager[692]: <warn> Activation (wlan0/wireless): association took too long, failing activation.
Mai 31 17:25:36 fizban NetworkManager[692]: <info> (wlan0): device state change: config -> failed (reason 'ssid-not-found') [50 120 53]
Mai 31 17:25:36 fizban NetworkManager[692]: <warn> Activation (wlan0) failed for connection 'Dragonlance'
Mai 31 17:25:36 fizban NetworkManager[692]: <info> (wlan0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Mai 31 17:25:36 fizban NetworkManager[692]: <info> (wlan0): deactivating device (reason 'none') [0]
Mai 31 17:25:36 fizban NetworkManager[692]: (NetworkManager:692): GLib-CRITICAL **: Source ID 503 was not found when attempting to remove it
Mai 31 17:25:36 fizban NetworkManager[692]: <info> (wlan0): supplicant interface state: scanning -> disconnected
Mai 31 17:25:36 fizban NetworkManager[692]: <warn> Couldn't disconnect supplicant interface: This interface is not connected.

Mais detalhes:

$ lspci
00:00.0 Host bridge: Intel Corporation Atom Processor Z36xxx/Z37xxx Series SoC Transaction Register (rev 0e)
00:02.0 VGA compatible controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display (rev 0e)
00:13.0 SATA controller: Intel Corporation Device 0f23 (rev 0e)
00:14.0 USB controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series USB xHCI (rev 0e)
00:1a.0 Encryption controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Trusted Execution Engine (rev 0e)
00:1b.0 Audio device: Intel Corporation Atom Processor Z36xxx/Z37xxx Series High Definition Audio Controller (rev 0e)
00:1c.0 PCI bridge: Intel Corporation Device 0f48 (rev 0e)
00:1c.1 PCI bridge: Intel Corporation Device 0f4a (rev 0e)
00:1f.0 ISA bridge: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Power Control Unit (rev 0e)
00:1f.3 SMBus: Intel Corporation Device 0f12 (rev 0e)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)
02:00.0 Network controller: Intel Corporation Wireless 3160 (rev 83)

A versão do firmare é 25.17.12.0

$ dmesg | grep iwlwifi
[   15.853182] iwlwifi 0000:02:00.0: loaded firmware version 25.17.12.0 op_mode iwlmvm

O módulo está carregado

$ lsmod | grep iwlwifi
iwlwifi               196608  1 iwlmvm
cfg80211              540672  3 iwlwifi,mac80211,iwlmvm

Versão do Kernel

$ uname -r
3.19.0-18-generic

    

Answer 1

De sua depuração sem fio , gostaria de:

• Desativar o IPV6 no seu roteador (ou atualizar o firmware do roteador)
• Desative o 802.11N no seu roteador (ou atualize o firmware do roteador)