Bom dia a todos.
Meu notebook é um Sony Vaio VGN-NR230AE com SO Ubuntu 13.04.
O que acontece é o seguinte. Raramente meu notebook conecta-se a rede wireless que fiz aqui em casa. É uma casa pequena de apenas um pavimento, o nível de sinal é excelente em qualquer ponto e não sofro com quedas de conexão à rede ADSL. Para avaliar a situação, segui a seguinte recomendação que li neste forum:
sudo lshw -C newtork
iwconfig
ifconfig -a
nm-tool
rfkill list wifi
Abaixo temos duas situações. A primeira é quando não estou conectado e não aparece nenhuma rede na lista em que o network manager apresenta. A segunda situação é quando não estou conectado e aparece uma lista de redes wireless, inclusive a minha (MEJ2013).
/*--- Não conecta e lista de redes detectadas está vazia --*/
rezende@rezende:~$ sudo lshw -C network
[sudo] password for rezende:
*-network
description: Ethernet interface
product: 88E8039 PCI-E Fast Ethernet Controller
vendor: Marvell Technology Group Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: eth0
version: 15
serial: 00:1a:80:d0:61:05
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.30 latency=0 link=no multicast=yes port=twisted pair
resources: irq:43 memory:f6000000-f6003fff ioport:2000(size=256)
*-network
description: Wireless interface
product: AR242x / AR542x Wireless Network Adapter (PCI-Express)
vendor: Atheros Communications Inc.
physical id: 0
bus info: pci@0000:06:00.0
logical name: wlan0
version: 01
serial: 00:1d:d9:78:a0:29
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath5k driverversion=3.8.0-30-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bg
resources: irq:18 memory:fa000000-fa00ffff
rezende@rezende:~$ iwconfig
wlan0 IEEE 802.11bg ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
lo no wireless extensions.
eth0 no wireless extensions.
rezende@rezende:~$ ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:1a:80:d0:61:05
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)
Interrupt:16
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:240 errors:0 dropped:0 overruns:0 frame:0
TX packets:240 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:19552 (19.5 KB) TX bytes:19552 (19.5 KB)
wlan0 Link encap:Ethernet HWaddr 00:1d:d9:78:a0:29
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)
rezende@rezende:~$ nm-tool
NetworkManager Tool
State: disconnected
- Device: wlan0 ----------------------------------------------------------------
Type: 802.11 WiFi
Driver: ath5k
State: disconnected
Default: no
HW Address: 00:1D:D9:78:A0:29
Capabilities:
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points
- Device: eth0 -----------------------------------------------------------------
Type: Wired
Driver: sky2
State: unavailable
Default: no
HW Address: 00:1A:80:D0:61:05
Capabilities:
Carrier Detect: yes
Wired Properties
Carrier: off
rezende@rezende:~$ rfkill list wifi
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
/* FIM */
/*-- Não conecta e a lista de redes detectadas está cheia (inclusive a minha rede MEJ2013) --*/
rezende@rezende:~/Documents/Vaio$ sudo lshw -C network
[sudo] password for rezende:
*-network
description: Ethernet interface
product: 88E8039 PCI-E Fast Ethernet Controller
vendor: Marvell Technology Group Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: eth0
version: 15
serial: 00:1a:80:d0:61:05
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.30 latency=0 link=no multicast=yes port=twisted pair
resources: irq:43 memory:f6000000-f6003fff ioport:2000(size=256)
*-network
description: Wireless interface
product: AR242x / AR542x Wireless Network Adapter (PCI-Express)
vendor: Atheros Communications Inc.
physical id: 0
bus info: pci@0000:06:00.0
logical name: wlan0
version: 01
serial: 00:1d:d9:78:a0:29
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath5k driverversion=3.8.0-30-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bg
resources: irq:18 memory:fa000000-fa00ffff
rezende@rezende:~/Documents/Vaio$ iwconfig
wlan0 IEEE 802.11bg ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
lo no wireless extensions.
eth0 no wireless extensions.
rezende@rezende:~/Documents/Vaio$ ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:1a:80:d0:61:05
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)
Interrupt:16
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:240 errors:0 dropped:0 overruns:0 frame:0
TX packets:240 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:19288 (19.2 KB) TX bytes:19288 (19.2 KB)
wlan0 Link encap:Ethernet HWaddr 00:1d:d9:78:a0:29
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:2 errors:0 dropped:0 overruns:0 frame:0
TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:306 (306.0 B) TX bytes:2335 (2.3 KB)
rezende@rezende:~/Documents/Vaio$ nm-tool
NetworkManager Tool
State: disconnected
- Device: wlan0 ----------------------------------------------------------------
Type: 802.11 WiFi
Driver: ath5k
State: disconnected
Default: no
HW Address: 00:1D:D9:78:A0:29
Capabilities:
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points
REDE REMACLO: Infra, 00:12:0E:B6:B3:08, Freq 2462 MHz, Rate 54 Mb/s, Strength 45 WPA
Carlos: Infra, 00:0E:2E:B4:24:47, Freq 2462 MHz, Rate 54 Mb/s, Strength 22 WPA WPA2
Mayra: Infra, 00:25:86:B3:F5:B0, Freq 2437 MHz, Rate 54 Mb/s, Strength 57 WPA WPA2
dlink: Infra, 00:21:91:74:3B:4C, Freq 2437 MHz, Rate 54 Mb/s, Strength 44 WEP
linksys: Infra, 00:1C:10:57:B3:DD, Freq 2437 MHz, Rate 54 Mb/s, Strength 27
tubarao: Infra, 78:44:76:2E:DE:80, Freq 2462 MHz, Rate 54 Mb/s, Strength 35
Netfor3: Infra, 00:02:6F:64:CF:D7, Freq 2447 MHz, Rate 11 Mb/s, Strength 34
Maicon: Infra, 00:0A:EB:26:71:0E, Freq 2462 MHz, Rate 54 Mb/s, Strength 12 WPA2
BRAULIO: Infra, F8:1A:67:8A:52:8E, Freq 2437 MHz, Rate 54 Mb/s, Strength 15 WPA WPA2
Ilda: Infra, A0:F3:C1:3B:07:8C, Freq 2412 MHz, Rate 54 Mb/s, Strength 24 WPA WPA2
mgnet minas 14: Infra, 00:0C:42:69:3F:2D, Freq 2422 MHz, Rate 11 Mb/s, Strength 12
Alvorada_P3: Infra, 00:02:6F:66:71:80, Freq 2422 MHz, Rate 11 Mb/s, Strength 10
MEJ2013: Infra, 54:E6:FC:B2:64:92, Freq 2462 MHz, Rate 54 Mb/s, Strength 52 WPA WPA2
COOP: Infra, 00:14:D1:52:C6:58, Freq 2447 MHz, Rate 54 Mb/s, Strength 45 WPA
- Device: eth0 -----------------------------------------------------------------
Type: Wired
Driver: sky2
State: unavailable
Default: no
HW Address: 00:1A:80:D0:61:05
Capabilities:
Carrier Detect: yes
Wired Properties
Carrier: off
rezende@rezende:~/Documents/Vaio$ rfkill list wifi
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
/* FIM */
Alguém poderia me ajudar? Muito obrigado.