Adaptador wifi usb não funciona( Realtek Semiconductor Corp. RTL8188CUS 802.11n

[fabianobriao]

Buenas,

Comprei um adaptador wifi usb com antena externa, pois meu sinal pega muito fraco. Como eu já havia utilizado este adaptador em um outro note e vi a melhoria gritante do qualidade do sinal alcançado resolvi utilizar no meu.ao invéz de usar cabo.
Segue abaixo algumas informações:

unane -a
Linux fabiano-Aspire-5315 2.6.35-32-generic #66-Ubuntu SMP Mon Feb 13 21:04:12 UTC 2012 i686 GNU/Linux

cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=10.10
DISTRIB_CODENAME=maverick
DISTRIB_DESCRIPTION="Ubuntu 10.10"

####################################################################################
lsusb
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 003: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN %(é este o cara)
Bus 002 Device 002: ID 04f2:b026 Chicony Electronics Co., Ltd
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

#######################################################################################
iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11bg ESSID:"INTELBRAS"
Mode:Managed Frequency:2.462 GHz Access Point: 00:1A:3F:64:F9:88
Bit Rate=54 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=33/70 Signal level=-77 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

vboxnet0 no wireless extensions.

virbr0 no wireless extensions.

##################################################################################
wvdial
--> WvDial: Internet dialer version 1.60
--> Cannot open /dev/ttyUSB0: No such file or directory
--> Cannot open /dev/ttyUSB0: No such file or directory
--> Cannot open /dev/ttyUSB0: No such file or directory
##################################################################################

/sbin/ifconfig
eth0 Link encap:Ethernet Endereço de HW 00:1e:ec:41:fb:34
UP BROADCAST MULTICAST MTU:1500 Métrica:1
pacotes RX:0 erros:0 descartados:0 excesso:0 quadro:0
Pacotes TX:0 erros:0 descartados:0 excesso:0 portadora:0
colisões:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
IRQ:18

eth0:avahi Link encap:Ethernet Endereço de HW 00:1e:ec:41:fb:34
inet end.: 169.254.8.170 Bcast:169.254.255.255 Masc:255.255.0.0
UP BROADCAST MULTICAST MTU:1500 Métrica:1
IRQ:18

lo Link encap:Loopback Local
inet end.: 127.0.0.1 Masc:255.0.0.0
endereço inet6: ::1/128 Escopo:Máquina
UP LOOPBACK RUNNING MTU:16436 Métrica:1
pacotes RX:185 erros:0 descartados:0 excesso:0 quadro:0
Pacotes TX:185 erros:0 descartados:0 excesso:0 portadora:0
colisões:0 txqueuelen:0
RX bytes:24030 (24.0 KB) TX bytes:24030 (24.0 KB)

virbr0 Link encap:Ethernet Endereço de HW b6:29:62:a9:24:4d
inet end.: 192.168.122.1 Bcast:192.168.122.255 Masc:255.255.255.0
endereço inet6: fe80::b429:62ff:fea9:244d/64 Escopo:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Métrica:1
pacotes RX:0 erros:0 descartados:0 excesso:0 quadro:0
Pacotes TX:191 erros:0 descartados:0 excesso:0 portadora:0
colisões:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:29200 (29.2 KB)

wlan0 Link encap:Ethernet Endereço de HW 00:1f:e1:1d:63:88
inet end.: 10.0.0.106 Bcast:10.0.0.255 Masc:255.255.255.0
endereço inet6: fe80::21f:e1ff:fe1d:6388/64 Escopo:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Métrica:1
pacotes RX:29689 erros:0 descartados:0 excesso:0 quadro:0
Pacotes TX:29532 erros:0 descartados:0 excesso:0 portadora:0
colisões:0 txqueuelen:1000
RX bytes:25379531 (25.3 MB) TX bytes:6780101 (6.7 MB)

#####################################################################################
/sbin/route -n
Tabela de Roteamento IP do Kernel
Destino Roteador MáscaraGen. Opções Métrica Ref Uso Iface
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 10.0.0.1 0.0.0.0 UG 0 0 0 wlan0
0.0.0.0 0.0.0.0 0.0.0.0 U 1002 0 0 eth0

######################################################################################
cat /etc/resolv.conf
/sbin/route -n

#######################################################################
cat /etc/network/interfaces
auto lo
iface lo inet loopback


auto dsl-provider
iface dsl-provider inet ppp
provider dsl-provider
pre-up /sbin/ifconfig eth0 up # line maintained by pppoeconf


auto eth0
allow-hotplug eth0
iface eth0 inet dhcp

#########################################################
Precisando de outras informações é só pedir. Entendidos em Linux, um tutorial para eu resolver meu problema por favor.

[fhsales]

problema semelhante. o meu é um Realtek 8188SU. boa sorte ai. pelo que ue vi MUITA gente tem dificuldades com esses adaptadores usb no ubuntu.^^.