Marca e modelo da placa?
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"No ínicio não havia nada e Ele disse: apt-get install light"

assim de rajada ... marca? modelo? ... faz lspci -nn

é que o elmig quer saber, porque ele é adivinho e quer confirmar com aquilo que disseres ... mas eu preciso mesmo de saber a marca e o modelo para poder ajudar.

prosas@prosas:~$ lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation Mobile 945GM/PM/GMS/940GML and 945GT Express Memory Controller Hub [8086:27a0] (rev 03)
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03)
00:02.1 Display controller [0380]: Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller [8086:27a6] (rev 03)
00:1b.0 Audio device [0403]: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller [8086:27d8] (rev 02)
00:1c.0 PCI bridge [0604]: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 [8086:27d0] (rev 02)
00:1c.1 PCI bridge [0604]: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 [8086:27d2] (rev 02)
00:1c.2 PCI bridge [0604]: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 [8086:27d4] (rev 02)
00:1c.3 PCI bridge [0604]: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 [8086:27d6] (rev 02)
00:1d.0 USB Controller [0c03]: Intel Corporation 82801G (ICH7 Family) USB UHCI #1 [8086:27c8] (rev 02)
00:1d.1 USB Controller [0c03]: Intel Corporation 82801G (ICH7 Family) USB UHCI #2 [8086:27c9] (rev 02)
00:1d.2 USB Controller [0c03]: Intel Corporation 82801G (ICH7 Family) USB UHCI #3 [8086:27ca] (rev 02)
00:1d.3 USB Controller [0c03]: Intel Corporation 82801G (ICH7 Family) USB UHCI #4 [8086:27cb] (rev 02)
00:1d.7 USB Controller [0c03]: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller [8086:27cc] (rev 02)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev e2)
00:1f.0 ISA bridge [0601]: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge [8086:27b9] (rev 02)
00:1f.1 IDE interface [0101]: Intel Corporation 82801G (ICH7 Family) IDE Controller [8086:27df] (rev 02)
00:1f.2 SATA controller [0106]: Intel Corporation 82801GBM/GHM (ICH7 Family) Serial ATA Storage Controller AHCI [8086:27c5] (rev 02)
00:1f.3 SMBus [0c05]: Intel Corporation 82801G (ICH7 Family) SMBus Controller [8086:27da] (rev 02)
02:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme BCM5751M Gigabit Ethernet PCI Express [14e4:167d] (rev 21)
03:00.0 Ethernet controller [0200]: Atheros Communications, Inc. AR5212 802.11abg NIC [168c:1014] (rev 01)
15:00.0 CardBus bridge [0607]: Texas Instruments PCI1510 PC card Cardbus Controller [104c:ac56]

isto serve?

ola!

andava aquia ver os posts velhos e vi que ninguem te respondeu!

ora deu para ver do lspci que tens uma placa atheros

Gigabit Ethernet PCI Express [14e4:167d] (rev 21)
03:00.0 Ethernet controller [0200]: Atheros Communications, Inc. AR5212 802.11abg

agora so precisas de instalar o madwifi...

eu gosto de compilar a ultima versao do svn, mas a maneira facil e instalar o module assistant para ele te coisar isso

para isso tens de ter o repositorio non-free activado e depois:

apt-get update
apt-get install module-assistant
m-a prepare
m-a a-i madwifi


agora deveras ter o interface ath0 a funcar

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se usas encryptacao wep podes defeni-la no /etc/network/interfaces


auto ath0
iface ath0 inet dhcp
wireless-essid Chapeu
wireless-enc 2577A4B0468E7BAF10A9A7A329
wireless-channel 11


se queres usar wpa teras de instalar o wpasupplicant que nunca usei.

boa sorte