Consegui resolver com os links abaixo:
http://ubuntuforum-pt.org/index.php/topic,62937.0.htmlhttp://ubuntuforum-br.org/index.php/topic,26815.0.htmlMas ainda gostaria de saber o motivo de o usuário e senha que antes funcionava, deixaram de funcionar.
Outra coisa, não sei se precisaria abrir outro tópico. Mas é o seguinte:
No pc que está conectado ao roteador via cabo, consigo acessar a net normalmente.
Mas no notebook que está usando conexão wireless, não consigo. Segue abaixo os comandos que tentei usar.
Outra coisa, nas configurações de rede, não tem a opção de "conexão wireless", somente "por fios" e "por modem". Lembrando que estou usando o ubuntu 7.04.
Agradeço se me informarem detalhadamente como resolver, pois como disse, irei começar a usar o linux novamente pra aprender.
~$ sudo /etc/init.d/networking stopPassword:
* Deconfiguring network interfaces... RTNETLINK answers: No such process
There is already a pid file /var/run/dhclient.eth0.pid with pid 5482
killed old client process, removed PID file
Internet Systems Consortium DHCP Client V3.0.4
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit
http://www.isc.org/sw/dhcp/Listening on LPF/eth0/00:a0:d1:84:6a:02
Sending on LPF/eth0/00:a0:d1:84:6a:02
Sending on Socket/fallback
DHCPRELEASE on eth0 to 192.168.1.1 port 67
[ OK ]
~$ sudo /etc/init.d/networking start * Configuring network interfaces... There is already a pid file /var/run/dhclient.eth0.pid with pid 134993416
Internet Systems Consortium DHCP Client V3.0.4
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit
http://www.isc.org/sw/dhcp/Listening on LPF/eth0/00:a0:d1:84:6a:02
Sending on LPF/eth0/00:a0:d1:84:6a:02
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
eth1: ERROR while getting interface flags: No such device
There is already a pid file /var/run/dhclient.eth1.pid with pid 134993416
Internet Systems Consortium DHCP Client V3.0.4
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit
http://www.isc.org/sw/dhcp/SIOCSIFADDR: No such device
eth1: ERROR while getting interface flags: No such device
eth1: ERROR while getting interface flags: No such device
Bind socket to interface: No such device
Failed to bring up eth1.
eth2: ERROR while getting interface flags: No such device
There is already a pid file /var/run/dhclient.eth2.pid with pid 134993416
Internet Systems Consortium DHCP Client V3.0.4
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit
http://www.isc.org/sw/dhcp/SIOCSIFADDR: No such device
eth2: ERROR while getting interface flags: No such device
eth2: ERROR while getting interface flags: No such device
Bind socket to interface: No such device
Failed to bring up eth2.
ath0: ERROR while getting interface flags: No such device
There is already a pid file /var/run/dhclient.ath0.pid with pid 134993416
Internet Systems Consortium DHCP Client V3.0.4
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit
http://www.isc.org/sw/dhcp/SIOCSIFADDR: No such device
ath0: ERROR while getting interface flags: No such device
ath0: ERROR while getting interface flags: No such device
Bind socket to interface: No such device
Failed to bring up ath0.
wlan0: ERROR while getting interface flags: No such device
There is already a pid file /var/run/dhclient.wlan0.pid with pid 134993416
Internet Systems Consortium DHCP Client V3.0.4
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit
http://www.isc.org/sw/dhcp/SIOCSIFADDR: No such device
wlan0: ERROR while getting interface flags: No such device
wlan0: ERROR while getting interface flags: No such device
Bind socket to interface: No such device
Failed to bring up wlan0.
[ OK ]
~$ cat /etc/resolv.conf# generated by NetworkManager, do not edit!
search lan
nameserver 192.168.1.1[/i]