Parece-me que o sinal sem fio é baixo, mas isso não explica por que o wicd funciona.
Quando conecto meu laptop a um roteador seguro wpa2 , usando wicd Eu não tenho problemas de conexão.
MAS quando me conecto com o seguinte comando de linha de comando (conforme descrito aqui )
ATUALIZADO:
ifconfig wlan0 up
wpa_supplicant -B -Dwext -i wlan0 -c /etc/wpa_supplicant.conf
dhcpd wlan0
Minha conexão é instável, às vezes funcionando às vezes não, indicada pela seguinte saída:
$ ping google.com
PING google.com (64.233.179.104) 56(84) bytes of data.
64 bytes from cpt01s01-in-f104.1e100.net (64.233.179.104): icmp_seq=1 ttl=56 time=190 ms
64 bytes from cpt01s01-in-f104.1e100.net (64.233.179.104): icmp_seq=2 ttl=56 time=196 ms
64 bytes from cpt01s01-in-f104.1e100.net (64.233.179.104): icmp_seq=3 ttl=56 time=184 ms
64 bytes from cpt01s01-in-f104.1e100.net (64.233.179.104): icmp_seq=4 ttl=56 time=172 ms
64 bytes from 64.233.179.104: icmp_seq=5 ttl=56 time=196 ms
ping: sendmsg: Network is unreachable
64 bytes from cpt01s01-in-f104.1e100.net (64.233.179.104): icmp_seq=7 ttl=56 time=210 ms
64 bytes from cpt01s01-in-f104.1e100.net (64.233.179.104): icmp_seq=8 ttl=56 time=181 ms
64 bytes from cpt01s01-in-f104.1e100.net (64.233.179.104): icmp_seq=9 ttl=56 time=168 ms
64 bytes from cpt01s01-in-f104.1e100.net (64.233.179.104): icmp_seq=10 ttl=56 time=168 ms
64 bytes from cpt01s01-in-f104.1e100.net (64.233.179.104): icmp_seq=11 ttl=56 time=171 ms
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable
64 bytes from cpt01s01-in-f104.1e100.net (64.233.179.104): icmp_seq=18 ttl=56 time=171 ms
64 bytes from cpt01s01-in-f104.1e100.net (64.233.179.104): icmp_seq=19 ttl=56 time=164 ms
64 bytes from cpt01s01-in-f104.1e100.net (64.233.179.104): icmp_seq=20 ttl=56 time=181 ms
64 bytes from cpt01s01-in-f104.1e100.net (64.233.179.104): icmp_seq=21 ttl=56 time=187 ms
64 bytes from cpt01s01-in-f104.1e100.net (64.233.179.104): icmp_seq=22 ttl=56 time=192 ms
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable
^C
--- google.com ping statistics ---
25 packets transmitted, 15 received, 40% packet loss, time 28231ms
rtt min/avg/max/mdev = 164.443/182.621/210.508/12.774 ms
Meu arquivo /etc/wpa_supplicant.conf :
network={
ssid="1010011010"
#psk="------------"
psk=------------------------------------------
}
dhcpcd wlan0
$ sudo dhcpcd wlan0
dhcpcd[18320]: version 5.2.5 starting
dhcpcd[18320]: wlan0: rebinding lease of 192.168.123.102
dhcpcd[18320]: wlan0: acknowledged 192.168.123.102 from 192.168.123.254
dhcpcd[18320]: wlan0: checking for 192.168.123.102
dhcpcd[18320]: wlan0: carrier lost
dhcpcd[18320]: wlan0: carrier acquired
dhcpcd[18320]: wlan0: rebinding lease of 192.168.123.102
dhcpcd[18320]: wlan0: acknowledged 192.168.123.102 from 192.168.123.254
dhcpcd[18320]: wlan0: checking for 192.168.123.102
dhcpcd[18320]: wlan0: leased 192.168.123.102 for 86400 seconds
dhcpcd: wlan0: MTU set to 1500
dhcpcd[18320]: forked to background, child pid 18377
ifconfig
$ ifconfig
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:16436 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:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
wlan0 Link encap:Ethernet HWaddr 00:15:AF:78:D4:AA
inet6 addr: fe80::215:afff:fe78:d4aa/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3218 errors:0 dropped:0 overruns:0 frame:0
TX packets:2909 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1959355 (1.8 Mb) TX bytes:415438 (405.7 Kb)
route
$ route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.123.0 * 255.255.255.0 U 303 0 0 wlan0
default 192.168.123.254 0.0.0.0 UG 303 0 0 wlan0
Parece-me que o sinal sem fio é baixo, mas isso não explica por que o wicd funciona.
você quer um sleep 10s antes da parte do dhcpd no mínimo