Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I have a DELL Inspiron N5010 laptop and I have dual boot with Windows 8.1 and Ubuntu 14.04. I had Ubuntu 13.10 and now I installed 14.04 using live media (I did not upgrade.) Now I am not able to access Internet via Wi-Fi. It is connecting to wifi without any problem, but just Internet doesn't work. In Windows 8.1 it works fine.

I am able to access internet via USB serial modem, but not via WiFi.

Here is few information that I am able to collect from laptop.

    user@laptop:~$ cat /etc/lsb-release; uname -a
    DISTRIB_ID=Ubuntu
    DISTRIB_RELEASE=14.04
    DISTRIB_CODENAME=trusty
    DISTRIB_DESCRIPTION="Ubuntu 14.04 LTS"
    Linux machine 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64         x86_64 x86_64 GNU/Linux
    user@laptop:~$ lspci -nnk | grep -iA2 net
    12:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11bgn Wireless         Network Adapter [14e4:4727] (rev 01)
        Subsystem: Dell Inspiron M5010 / XPS 8300 [1028:0010]
        Kernel driver in use: wl
    13:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.         RTL8101E/RTL8102E         PCI Express Fast Ethernet controller [10ec:8136] (rev 02)
        Subsystem: Dell Device [1028:0447]
        Kernel driver in use: r8169
    user@laptop:~$ iwconfig
    eth0      no wireless extensions.


    lo        no wireless extensions.


    wlan0     IEEE 802.11abg  ESSID:off/any  
              Mode:Managed  Access Point: Not-Associated   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Power Management:off

    user@laptop:~$ iwconfig
    ppp0      no wireless extensions.


    eth0      no wireless extensions.


    lo        no wireless extensions.


    wlan0     IEEE 802.11abg  ESSID:off/any  
              Mode:Managed  Access Point: Not-Associated   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Power Management:off

    user@laptop:~$ rfkill list all
    0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
    1: brcmwl-0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
    2: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
    user@laptop:~$ lsmod
    Module                  Size  Used by
    ppp_deflate            12950  0 
    bsd_comp               12921  0 
    ppp_async              17413  1 
    crc_ccitt              12707  1 ppp_async
    option                 42468  3 
    usb_wwan               20429  1 option
    usbserial              45014  9 option,usb_wwan
    usb_storage            62209  0 
    bnep                   19624  2 
    rfcomm                 69160  8 
    joydev                 17381  0 
    snd_hda_codec_hdmi     46207  1 
    snd_hda_codec_idt      54645  1 
    btusb                  32412  0 
    bluetooth             395423  22 bnep,btusb,rfcomm
    hid_generic            12548  0 
    usbhid                 52616  0 
    hid                   106148  2 hid_generic,usbhid
    uvcvideo               80885  0 
    videobuf2_vmalloc      13216  1 uvcvideo
    videobuf2_memops       13362  1 videobuf2_vmalloc
    videobuf2_core         40664  1 uvcvideo
    videodev              134688  2 uvcvideo,videobuf2_core
    dell_wmi               12761  0 
    sparse_keymap          13948  1 dell_wmi
    snd_hda_intel          52355  3 
    snd_hda_codec         192906  3 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel
    snd_hwdep              13602  1 snd_hda_codec
    snd_pcm               102099  3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
    snd_page_alloc         18710  2 snd_pcm,snd_hda_intel
    snd_seq_midi           13324  0 
    snd_seq_midi_event     14899  1 snd_seq_midi
    dell_laptop            18168  0 
    dcdbas                 14928  1 dell_laptop
    snd_rawmidi            30144  1 snd_seq_midi
    lib80211_crypt_tkip    17619  0 
    intel_powerclamp       14705  0 
    coretemp               13435  0 
    kvm_intel             143060  0 
    kvm                   451511  1 kvm_intel
    snd_seq                61560  2 snd_seq_midi_event,snd_seq_midi
    psmouse               102222  0 
    wl                   4207846  0 
    intel_ips              18664  0 
    serio_raw              13462  0 
    i915                  783485  8 
    snd_seq_device         14497  3 snd_seq,snd_rawmidi,snd_seq_midi
    lib80211               14381  2 wl,lib80211_crypt_tkip
    cfg80211              484040  1 wl
    lpc_ich                21080  0 
    snd_timer              29482  2 snd_pcm,snd_seq
    mei_me                 18627  0 
    snd                    69238  17         snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_idt,snd_pcm,snd_seq,snd_raw        midi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
    mei                    82274  1 mei_me
    drm_kms_helper         52758  1 i915
    soundcore              12680  1 snd
    drm                   302817  4 i915,drm_kms_helper
    i2c_algo_bit           13413  1 i915
    wmi                    19177  1 dell_wmi
    video                  19476  1 i915
    mac_hid                13205  0 
    parport_pc             32701  0 
    ppdev                  17671  0 
    lp                     17759  0 
    parport                42348  3 lp,ppdev,parport_pc
    ahci                   25819  4 
    r8169                  67581  0 
    libahci                32168  1 ahci
    mii                    13934  1 r8169
    user@laptop:

Thank you.

share|improve this question
    
Can you add the output of nm-tool to your question? –  Mitch May 17 at 12:21
    
Please do what is in the accepted answer in the link below so we may see the information needed to help diagnose the issue. <askubuntu.com/questions/425155/…; –  Wild Man May 20 at 2:13

1 Answer 1

  1. Do you have an IP address?
    • ifconfig
  2. Can you ping your router/gateway
    • ping 192.168.1.1 (possibly different)
  3. Can you ping Google's DNS servers?
    • ping 8.8.8.8

If the above steps are successful, then you're most likely experiencing DNS issues. If any of the above steps fail, you should focus on that part of the network.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.