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Thread: Ubuntu 12.10 on Lenovo G580, connected to local network but no internet

  1. #1
    Join Date
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    Ubuntu 12.10 on Lenovo G580, connected to local network but no internet

    According to the specs (which can be found at http://www.lenovo.com/products/us/te...g-series/g580/ ) of my Lenovo G580, I either have a Intel® WiMAX/WiFi 6250 2 x 2 AGN card or a Intel® WiMAX/WiFi 6150 2 x 2 AGN card. I am able to connect to my local network, but unable to reach the internet. I can connect to the internet if my comupter is plugged directly into my router, but I want to connect wirelessly. So, can anyone help me with this?

    Thanks,
    Nuggets

  2. #2
    Join Date
    Aug 2005
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    22,313
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    Ubuntu 16.04 Xenial Xerus

    Re: Ubuntu 12.10 on Lenovo G580, connected to local network but no internet

    Is your driver called iwlwifi? Please open a terminal Ctrl+Alt+t and run:
    Code:
    lsmod
    Is iwlwifi listed? If so, please check here: http://ubuntuforums.org/showthread.p...ht=11n_disable
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  3. #3
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    Re: Ubuntu 12.10 on Lenovo G580, connected to local network but no internet

    Nope, iwlwifi is not listed.

  4. #4
    Join Date
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    Re: Ubuntu 12.10 on Lenovo G580, connected to local network but no internet

    Quote Originally Posted by ThisIsNuggets View Post
    Nope, iwlwifi is not listed.
    Let's try to find out what is. Please run and post:
    Code:
    sudo lshw -C network
    Thanks.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  5. #5
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    Re: Ubuntu 12.10 on Lenovo G580, connected to local network but no internet

    Here are the results:
    Code:
       *-network               
           description: Wireless interface
           product: AR9285 Wireless Network Adapter (PCI-Express)
           vendor: Atheros Communications Inc.
           physical id: 0
           bus info: pci@0000:02:00.0
           logical name: wlan0
           version: 01
           serial: 20:68:9d:a3:4c:31
           width: 64 bits
           clock: 33MHz
           capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
           configuration: broadcast=yes driver=ath9k driverversion=3.5.0-17-generic firmware=N/A ip=10.0.0.9 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
           resources: irq:17 memory:f0500000-f050ffff
      *-network UNCLAIMED
           description: Ethernet controller
           product: AR8162 Fast Ethernet
           vendor: Atheros Communications Inc.
           physical id: 0
           bus info: pci@0000:03:00.0
           version: 10
           width: 64 bits
           clock: 33MHz
           capabilities: pm pciexpress msi msix bus_master cap_list
           configuration: latency=0
           resources: memory:f0400000-f043ffff ioport:2000(size=128)

  6. #6
    Join Date
    Mar 2013
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    Re: Ubuntu 12.10 on Lenovo G580, connected to local network but no internet

    Nevermind, It just randomly started working. Many thanks for the attempted help, though.

  7. #7
    Join Date
    Oct 2007
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    15

    Re: Ubuntu 12.10 on Lenovo G580, connected to local network but no internet

    Hi

    I wonder can i hijack this thread. I have a similar problem, with small variation.

    Mine is lenovo y560 and i have dual partition: Ubuntu 12.04 and Windows 7. All these while i had no problem with my network connectivity in ubuntu, but a day back my laptop suddenly switched off due to over heating, and when i turned on I couldnt connect to the internet in ubuntu. Internet in windows working fine.

    I can connect to the wireless network(atleast thats what it says), but when i open a browser, i coudnt actually get the internet. Even with the wired connection, it is the case. It says it is connected to the wired network, but no internet. I followed this thread and couple of other threads and tried some of the recipes, but the problem still persists! I am not sure whether the power management in ubuntu disabled any network related drivers as the laptop switched off suddenly!?!

    I will really appreciate any help on this issue. Thanks.

    Here are some of the outputs for the commands you mentioned.

    hash@ubuntu:~$ lsmod
    Module Size Used by
    joydev 17693 0
    vesafb 13844 1
    parport_pc 32866 0
    ppdev 17113 0
    lp 17799 0
    parport 46562 3 parport_pc,ppdev,lp
    rfcomm 47604 0
    bnep 18281 2
    bluetooth 180153 10 rfcomm,bnep
    binfmt_misc 17540 1
    arc4 12529 2
    snd_hda_codec_hdmi 32474 1
    snd_hda_codec_realtek 224173 1
    fglrx 4713410 156
    ideapad_laptop 18234 0
    sparse_keymap 13890 1 ideapad_laptop
    snd_hda_intel 33719 5
    snd_hda_codec 127706 3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_i ntel
    snd_hwdep 17764 1 snd_hda_codec
    video 19651 0
    snd_pcm 97275 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
    snd_seq_midi 13324 0
    snd_rawmidi 30748 1 snd_seq_midi
    snd_seq_midi_event 14899 1 snd_seq_midi
    snd_seq 61929 2 snd_seq_midi,snd_seq_midi_event
    iwlwifi 401140 0
    snd_timer 29990 2 snd_pcm,snd_seq
    snd_seq_device 14540 3 snd_seq_midi,snd_rawmidi,snd_seq
    mac80211 506862 1 iwlwifi
    jmb38x_ms 17646 0
    uvcvideo 72627 0
    wmi 19256 0
    videodev 98259 1 uvcvideo
    v4l2_compat_ioctl32 17128 1 videodev
    memstick 16569 1 jmb38x_ms
    intel_ips 18174 0
    snd 79041 20 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_i ntel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,s nd_seq,snd_timer,snd_seq_device
    mac_hid 13253 0
    cfg80211 205774 2 iwlwifi,mac80211
    psmouse 97485 0
    i7core_edac 28102 0
    serio_raw 13211 0
    soundcore 15091 1 snd
    mei 41616 0
    snd_page_alloc 18529 2 snd_hda_intel,snd_pcm
    edac_core 53746 1 i7core_edac
    tg3 152085 0
    sdhci_pci 18826 0
    sdhci 33205 1 sdhci_pci


    hash@ubuntu:~$ lspci -nnk | grep -iA2 net
    05:00.0 Network controller [0280]: Intel Corporation Centrino Wireless-N 1000 [8086:0084]
    Subsystem: Intel Corporation Centrino Wireless-N 1000 BGN [8086:1315]
    Kernel driver in use: iwlwifi
    --
    09:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe [14e4:1692] (rev 01)
    Subsystem: Lenovo Device [17aa:38cf]
    Kernel driver in use:
    hash@ubuntu:~$ iwconfig
    lo no wireless extensions.

    wlan0 IEEE 802.11bg ESSID:"jthomas's Network"
    Mode:Managed Frequency:2.437 GHz Access Point: F8:1EF:FF:C1:4D
    Bit Rate=54 Mb/s Tx-Power=14 dBm
    Retry long limit:7 RTS thrff Fragment thrff
    Power Managementff
    Link Quality=56/70 Signal level=-54 dBm
    Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
    Tx excessive retries:0 Invalid misc:53 Missed beacon:0

    eth0 no wireless extensions.

    hash@ubuntu:~$ rfkill list all
    0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
    1: ideapad_bluetooth: Bluetooth
    Soft blocked: yes
    Hard blocked: no
    2: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no


    hash@ubuntu:~$ ping 127.0.0.1

    PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
    64 bytes from 127.0.0.1: icmp_req=1 ttl=64 time=0.038 ms
    64 bytes from 127.0.0.1: icmp_req=2 ttl=64 time=0.028 ms
    64 bytes from 127.0.0.1: icmp_req=3 ttl=64 time=0.034 ms
    64 bytes from 127.0.0.1: icmp_req=4 ttl=64 time=0.030 ms
    64 bytes from 127.0.0.1: icmp_req=5 ttl=64 time=0.032 ms
    64 bytes from 127.0.0.1: icmp_req=6 ttl=64 time=0.033 ms
    ^C
    --- 127.0.0.1 ping statistics ---
    6 packets transmitted, 6 received, 0% packet loss, time 4998ms
    rtt min/avg/max/mdev = 0.028/0.032/0.038/0.006 ms
    hash@ubuntu:~$


    ping 192.168.X.X
    hash@ubuntu:~$ ping 192.168.1.24
    PING 192.168.1.24 (192.168.1.24) 56(84) bytes of data.
    64 bytes from 192.168.1.24: icmp_req=1 ttl=64 time=0.036 ms
    64 bytes from 192.168.1.24: icmp_req=2 ttl=64 time=0.029 ms
    64 bytes from 192.168.1.24: icmp_req=3 ttl=64 time=0.031 ms
    64 bytes from 192.168.1.24: icmp_req=4 ttl=64 time=0.028 ms
    64 bytes from 192.168.1.24: icmp_req=5 ttl=64 time=0.029 ms
    64 bytes from 192.168.1.24: icmp_req=6 ttl=64 time=0.030 ms
    ^C
    --- 192.168.1.24 ping statistics ---
    6 packets transmitted, 6 received, 0% packet loss, time 4996ms
    rtt min/avg/max/mdev = 0.028/0.030/0.036/0.006 ms
    hash@ubuntu:~$




    ping 8.8.8.8

    hash@ubuntu:~$ ping 8.8.8.8
    PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
    64 bytes from 8.8.8.8: icmp_req=1 ttl=47 time=37.2 ms
    64 bytes from 8.8.8.8: icmp_req=2 ttl=47 time=36.6 ms
    64 bytes from 8.8.8.8: icmp_req=3 ttl=47 time=38.1 ms
    64 bytes from 8.8.8.8: icmp_req=4 ttl=47 time=37.2 ms
    64 bytes from 8.8.8.8: icmp_req=5 ttl=47 time=37.8 ms
    64 bytes from 8.8.8.8: icmp_req=6 ttl=47 time=38.0 ms
    64 bytes from 8.8.8.8: icmp_req=7 ttl=47 time=37.4 ms
    ^C
    --- 8.8.8.8 ping statistics ---
    7 packets transmitted, 7 received, 0% packet loss, time 6009ms
    rtt min/avg/max/mdev = 36.670/37.523/38.134/0.545 ms




    ping google.com
    hash@ubuntu:~$ ping google.com
    ping: unknown host google.com
    Last edited by harishankar; April 2nd, 2013 at 04:01 AM.

  8. #8
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    Ubuntu 7.10 Gutsy Gibbon

    Re: Ubuntu 12.10 on Lenovo G580, connected to local network but no internet

    Hi harishankar,

    Have you check /etc/resolv.conf ? it seems that you could ping the IP 8.8.8.8 but it can't resolv the domain google.com

  9. #9
    Join Date
    Oct 2007
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    15

    Re: Ubuntu 12.10 on Lenovo G580, connected to local network but no internet

    Hi

    No, i havent checked that file. Can you please throw in some more information on what i should look for in it? If there is any other thing i should also look for, please state that too. Sorry for pulling things, it is because i have to hop between ubuntu,for trying out the suggestions and windows,for posting it on the net. .

    Thanks.

  10. #10
    Join Date
    Oct 2007
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    15

    Re: Ubuntu 12.10 on Lenovo G580, connected to local network but no internet

    Hi

    This is the content of my /etc/resolv.conf
    hash@ubuntu:~$ cat /etc/resolv.conf
    #nameserver 10.182.70.107
    #nameserver 10.180.15.160
    nameserver 128.141.1.1
    here is the route -n
    hash@ubuntu:~$ route -n
    Kernel IP routing table
    Destination Gateway Genmask Flags Metric Ref Use Iface
    0.0.0.0 128.141.1.1 0.0.0.0 UG 0 0 0 wlan0
    128.141.0.0 0.0.0.0 255.255.0.0 U 2 0 0 wlan0
    169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlan0

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