Atualmente estou passando por desconexões aleatórias da minha rede sem fio. Parece que está se tornando cada vez mais freqüente (no entanto, não vi nenhum padrão claro).
Isso está me matando...
Basicamente, em algum momento, a rede Wi-Fi deixa de ser detectada e NÃO POSSO VER NENHUMA REDE MAIS COMO se a placa de rede estivesse desligada
Abaixo estão algumas informações que devem ajudar, bem como uma tentativa de corrigi-lo (de fóruns do Ubuntu).
Máquina: Acer Aspire S3 (modelo exato nº Aspire S3-951-2464G34iss
)
statquant@euclide:~$ lsb_release -d
Description: Ubuntu 12.04.1 LTS
statquant@euclide:~$ uname -mr
3.2.0-33-generic x86_64
statquant@euclide:~$ sudo /etc/init.d/networking restart
* Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces
* Reconfiguring network interfaces...
statquant@euclide:~$ lspci
02:00.0 Network controller: Atheros Communications Inc. AR9485 Wireless Network Adapter (rev 01)
statquant@euclide:~$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 004: ID 064e:c321 Suyin Corp.
Bus 002 Device 003: ID 0bda:0129 Realtek Semiconductor Corp.
statquant@euclide:~$ ifconfig
wlan0 Link encap:Ethernet HWaddr 74:de:2b:dd:c4:78
inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::76de:2bff:fedd:c478/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:913 errors:0 dropped:0 overruns:0 frame:0
TX packets:802 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:873218 (873.2 KB) TX bytes:125826 (125.8 KB)
statquant@euclide:~$ iwconfig
wlan0 IEEE 802.11bgn ESSID:"Bbox-D646D1"
Mode:Managed Frequency:2.437 GHz Access Point: 00:19:70:80:01:6C
Bit Rate=65 Mb/s Tx-Power=16 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=56/70 Signal level=-54 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:71 Missed beacon:0
statquant@euclide:~$ dmesg | grep "wlan"
[ 17.495866] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 17.498950] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 20.072015] wlan0: authenticate with 00:19:70:80:01:6c (try 1)
[ 20.269853] wlan0: authenticate with 00:19:70:80:01:6c (try 2)
[ 20.272386] wlan0: authenticated
[ 20.298682] wlan0: associate with 00:19:70:80:01:6c (try 1)
[ 20.302321] wlan0: RX AssocResp from 00:19:70:80:01:6c (capab=0x431 status=0 aid=1)
[ 20.302325] wlan0: associated
[ 20.307307] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 30.402292] wlan0: no IPv6 routers present
statquant@euclide:~$ sudo lshw -C network
[sudo] password for statquant:
*-network
description: Wireless interface
product: AR9485 Wireless Network Adapter
vendor: Atheros Communications Inc.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 01
serial: 74:de:2b:dd:c4:78
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=3.2.0-33-generic firmware=N/A ip=192.168.1.3 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
resources: irq:17 memory:c0400000-c047ffff memory:afb00000-afb0ffff
statquant@euclide:~$ iwlist scan
wlan0 Scan completed :
Cell 01 - Address: 00:19:70:80:01:6C
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=56/70 Signal level=-54 dBm
Encryption key:on
ESSID:"Bbox-D646D1"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=000000125fb152bb
Extra: Last beacon: 40020ms ago
IE: Unknown: 000B42626F782D443634364431
IE: Unknown: 010882848B960C121824
IE: Unknown: 030106
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: 2A0100
IE: Unknown: 32043048606C
IE: Unknown: DD180050F2020101820003A4000027A4000042435E0062322F00
IE: Unknown: 2D1A4C101BFF00000000000000000000000000000000000000000000
IE: Unknown: 3D1606080800000000000000000000000000000000000000
IE: Unknown: DD0900037F01010000FF7F
IE: Unknown: DD0A00037F04010000000000
Eu fiz o seguinte (depois de procurar correções de problemas semelhantes), mas infelizmente
isso não resolve meu problema.
sudo modprobe -r iwlwifi
sudo modprobe iwlwifi 11n_disable=1
Este é um instantâneo que obtive via iwscanner , como você pode ver, mesmo quando o wifi está funcionando, há pequenas perdas
Eufizissoseguindooseguinte este tópico , trabalhei bem por algumas horas, mas tive uma desconexão: (
Aqui está o que eu fiz:
statquant@euclide:~$ sudo modprobe -rfv ath9k
[sudo] password for statquant:
rmmod /lib/modules/3.2.0-34-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k.ko
rmmod /lib/modules/3.2.0-34-generic/kernel/net/mac80211/mac80211.ko
rmmod /lib/modules/3.2.0-34-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_common.ko
rmmod /lib/modules/3.2.0-34-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_hw.ko
rmmod /lib/modules/3.2.0-34-generic/kernel/drivers/net/wireless/ath/ath.ko
rmmod /lib/modules/3.2.0-34-generic/kernel/net/wireless/cfg80211.ko
statquant@euclide:~$ sudo modprobe -v ath9k nohwcrypt=1
insmod /lib/modules/3.2.0-34-generic/kernel/net/wireless/cfg80211.ko
insmod /lib/modules/3.2.0-34-generic/kernel/drivers/net/wireless/ath/ath.ko
insmod /lib/modules/3.2.0-34-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_hw.ko
insmod /lib/modules/3.2.0-34-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_common.ko
insmod /lib/modules/3.2.0-34-generic/kernel/net/mac80211/mac80211.ko
insmod /lib/modules/3.2.0-34-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k.ko nohwcrypt=1