My wireless will connect but will not connect to the internet. ubuntu 10.10 32bi

i have a new gateway LT4008u net book with the atheros wireless card. it worked fine with windows, i deleted windows and installed ubuntu. now it shows that its connected to my wireless network but will not connect to the internet. through any process, cant even update. any help would be greatly appreciated
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More about wireless connect connect internet ubuntu 32bi
  1. does you computer have a IP?
  2. open a command prompt. and type both of these commands and post the output here
    (this will list all the devices that are installed on your laptops pci slot)

    if you wireless card is usb use this command

    this will see if you have an ip address assigned among other useful info.

    post the output of each one.

    Also when you run the command and you do not have wlan0 listed this most likly means your wireless cards driver is not installed properly or is not being brought up properly
  3. Also post iptables -L
  4. While you are at it (terminal screen), type the following command:


    If you get something like this:

    PING ( 56(84) bytes of data.
    64 bytes from icmp_req=1 ttl=42 time=77.2 ms
    64 bytes from icmp_req=2 ttl=42 time=78.4 ms
    64 bytes from icmp_req=3 ttl=42 time=76.4 ms
    64 bytes from icmp_req=4 ttl=42 time=77.1 ms
    64 bytes from icmp_req=5 ttl=42 time=75.8 ms
    64 bytes from icmp_req=6 ttl=42 time=76.3 ms
    --- ping statistics ---
    6 packets transmitted, 6 received, 0% packet loss, time 5007ms
    rtt min/avg/max/mdev = 75.846/76.910/78.425/0.873 ms

    it's a DNS problem. This means you got Internet connection, but your DNS entries aren't correct or not set, that means Firefox won't be able to resolve human readable addresses such as "", nor will apt-get or synaptic be able to download packages etc.
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