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Thread: Internet not working in ubuntu 12.04

  1. #1
    Join Date
    Mar 2015
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    Internet not working in ubuntu 12.04

    Hello Experts ,

    I am facing issue in internet , I have connected to WIFI network [ DHCP Address assigned ] where unable to surf internet. the same wifi n/w is working for other people but it not for me.

    Important Point : I also have Virtual box [ Virtual Machine ] in that i have windows 7 , Internet is working in windows using the same wifi n/w. As you guys aware that windows will get the ip from ubuntu interface.


    a. IP Address assigned
    b. Able to ping the gateway
    c. nslookup www.google.com --> Not working


    Below are some of the output::::

    ejknoqr@5GTFTS1:~$ ifconfig wlan0
    ----------------------------------
    wlan0 Link encap:Ethernet HWaddr 8c:70:5a:0a:15:00
    inet addr:10.10.13.161 Bcast:10.10.13.255 Mask:255.255.255.0
    inet6 addr: fe80::8e70:5aff:fe0a:1500/64 Scope:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:30338 errors:0 dropped:0 overruns:0 frame:0
    TX packets:35254 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:25934403 (25.9 MB) TX bytes:6045414 (6.0 MB)

    ejknoqr@5GTFTS1:~$ netstat -nr
    --------------------------------------
    Kernel IP routing table
    Destination Gateway Genmask Flags MSS Window irtt Iface
    0.0.0.0 10.10.13.1 0.0.0.0 UG 0 0 0 wlan0
    10.10.13.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0
    169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 wlan0

    ejknoqr@5GTFTS1:~$ sudo lshw -C network
    --------------------------------------------
    PCI (sysfs)

    *-network
    description: Ethernet interface
    product: 82579LM Gigabit Network Connection
    vendor: Intel Corporation
    physical id: 19
    bus info: pci@0000:00:19.0
    logical name: eth0
    version: 04
    serial: d4:be:d9:20:c0:77
    capacity: 1Gbit/s
    width: 32 bits
    clock: 33MHz
    capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
    configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.3.2-k firmware=0.13-3 latency=0 link=no multicast=yes port=twisted pair
    resources: irq:44 memory:e6e00000-e6e1ffff memory:e6e80000-e6e80fff ioport:5080(size=32)
    *-network
    description: Wireless interface
    product: Centrino Advanced-N 6205 [Taylor Peak]
    vendor: Intel Corporation
    physical id: 0
    bus info: pci@0000:03:00.0
    logical name: wlan0
    version: 34
    serial: 8c:70:5a:0a:15:00
    width: 64 bits
    clock: 33MHz
    capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
    configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-33-generic firmware=18.168.6.1 ip=10.10.13.161 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
    resources: irq:48 memory:e6d00000-e6d01fff


    Please help to fix this issue

  2. #2
    Join Date
    Mar 2010
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    Lubuntu 14.04 Trusty Tahr

    Re: Internet not working in ubuntu 12.04

    If you can ping the router, try to ping public IP addresses on the internet 8.8.8.8 is well-known.
    If that works, you have a DNS issue.
    If that doesn't work, you have a routing issue.

    Since you can ping the router, you do not have a connection issue.

  3. #3
    Join Date
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    Xubuntu

    Re: Internet not working in ubuntu 12.04

    Welcome. In Network Manager, edit the wireless connection and make sure you have the correct DNS IPs for your ISP. Check them against the DNS addresses in the working Windows.

    In fact, check everything against the working Win connection and see if you spot any anomolies.

  4. #4
    Join Date
    Feb 2008
    Location
    In my skin.
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    Hidden!
    Distro
    Xubuntu

    Re: Internet not working in ubuntu 12.04

    Welcome. In Network Manager, edit the wireless connection and make sure you have the correct DNS IPs for your ISP. Check them against the DNS addresses in the working Windows.

    In fact, check everything against the working Win connection and see if you spot any anomolies.

    PS: How are you setting the static IP on the Ubuntu install? If you have set a static IP in Network Manager, check on the router that it is not in a range that the router's DHCP server is serving IPs. That can cause issues.

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