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Thread: Intel Centrino Advanced-N 6235 / Ubuntu 12.04 LTS Wi-Fi Problem

  1. #1
    Join Date
    Sep 2013
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    7

    Intel Centrino Advanced-N 6235 / Ubuntu 12.04 LTS Wi-Fi Problem

    My HP ProBook 4440s with Ubuntu 12.04 is unable to connect to the internet through wi-fi. When I try to connect, it asks for my log-in crednetials every 2 minutes, but is unable to connect.
    The following are the codes:
    Code:
    kiit@kiit-HP-ProBook-4440s:~$ cat /etc/lsb-release; uname -a
    DISTRIB_ID=Ubuntu
    DISTRIB_RELEASE=12.04
    DISTRIB_CODENAME=precise
    DISTRIB_DESCRIPTION="Ubuntu 12.04.2 LTS"
    Linux kiit-HP-ProBook-4440s 3.2.0-29-generic-pae #46-Ubuntu SMP Fri Jul 27 17:25:43 UTC 2012 i686 i686 i386 GNU/Linux
    kiit@kiit-HP-ProBook-4440s:~$ 
    kiit@kiit-HP-ProBook-4440s:~$ lspci -nnk | grep -iA2 net
    03:00.0 Network controller [0280]: Intel Corporation Centrino Advanced-N 6235 [8086:088e] (rev 24)
        Subsystem: Intel Corporation Centrino Advanced-N 6235 AGN [8086:4060]
        Kernel driver in use: iwlwifi
    --
    04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 07)
        Subsystem: Hewlett-Packard Company Device [103c:17f3]
        Kernel driver in use: r8169
    kiit@kiit-HP-ProBook-4440s:~$ 
    kiit@kiit-HP-ProBook-4440s:~$ lsusb
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
    Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
    Bus 003 Device 002: ID 046d:c52f Logitech, Inc. Wireless Mouse M305
    Bus 001 Device 003: ID 138a:003d Validity Sensors, Inc. 
    Bus 001 Device 004: ID 04f2:b372 Chicony Electronics Co., Ltd 
    Bus 002 Device 003: ID 8087:07da Intel Corp. 
    kiit@kiit-HP-ProBook-4440s:~$ 
    kiit@kiit-HP-ProBook-4440s:~$ iwconfig
    lo        no wireless extensions.
    
    
    wlan0     IEEE 802.11abgn  ESSID:off/any  
              Mode:Managed  Access Point: Not-Associated   Tx-Power=15 dBm   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Power Management:off
              
    eth0      no wireless extensions.
    
    
    kiit@kiit-HP-ProBook-4440s:~$ 
    kiit@kiit-HP-ProBook-4440s:~$ rfkill list all
    0: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
    1: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
    2: hp-wifi: Wireless LAN
        Soft blocked: no
        Hard blocked: no
    3: hp-bluetooth: Bluetooth
        Soft blocked: no
        Hard blocked: no
    kiit@kiit-HP-ProBook-4440s:~$ 
    kiit@kiit-HP-ProBook-4440s:~$ lsmod
    Module                  Size  Used by
    snd_hda_codec_hdmi     31775  1 
    snd_hda_codec_idt      60251  1 
    parport_pc             32114  0 
    ppdev                  12849  0 
    rfcomm                 38139  12 
    bnep                   17830  2 
    binfmt_misc            17292  1 
    arc4                   12473  2 
    hp_wmi                 13652  0 
    sparse_keymap          13658  1 hp_wmi
    snd_hda_intel          32765  3 
    snd_hda_codec         109562  3 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel
    snd_hwdep              13276  1 snd_hda_codec
    snd_pcm                80845  3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
    hp_accel               25728  0 
    lis3lv02d              19268  1 hp_accel
    input_polldev          13648  1 lis3lv02d
    psmouse                72919  0 
    serio_raw              13027  0 
    snd_seq_midi           13132  0 
    snd_rawmidi            25424  1 snd_seq_midi
    snd_seq_midi_event     14475  1 snd_seq_midi
    btusb                  17912  2 
    bluetooth             158438  23 rfcomm,bnep,btusb
    snd_seq                51567  2 snd_seq_midi,snd_seq_midi_event
    wmi                    18744  1 hp_wmi
    uvcvideo               67203  0 
    videodev               86588  1 uvcvideo
    jmb38x_ms              17406  0 
    snd_timer              28931  2 snd_pcm,snd_seq
    snd_seq_device         14172  3 snd_seq_midi,snd_rawmidi,snd_seq
    memstick               15857  1 jmb38x_ms
    iwlwifi               291907  0 
    mac80211              436455  1 iwlwifi
    snd                    62064  16 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
    i915                  414739  3 
    soundcore              14635  1 snd
    snd_page_alloc         14108  2 snd_hda_intel,snd_pcm
    joydev                 17393  0 
    mac_hid                13077  0 
    cfg80211              178679  2 iwlwifi,mac80211
    mei                    36570  0 
    drm_kms_helper         45466  1 i915
    drm                   197692  4 i915,drm_kms_helper
    i2c_algo_bit           13199  1 i915
    video                  19068  1 i915
    lp                     17455  0 
    parport                40930  3 parport_pc,ppdev,lp
    usbhid                 41906  0 
    hid                    77367  1 usbhid
    r8169                  56321  0 
    sdhci_pci              18324  0 
    sdhci                  28241  1 sdhci_pci
    Can anyone please help? The Wi-fi works just fine with Windows 7, but Ubuntu just does not manage to connect.

  2. #2
    Join Date
    Apr 2012
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    Re: Ubuntu 12.04 LTS Wi-Fi Problem

    Hi, give this a read and see if it helps
    http://ubuntuforums.org/showthread.php?t=1996768
    thanks.
    Craving anchovy, herring and squid pizza.....with clam sauce

  3. #3
    Join Date
    Sep 2013
    Beans
    7

    Re: Ubuntu 12.04 LTS Wi-Fi Problem

    Thanks, but what am I supposed to do from the link you gave? Should I use the codes in that page on my machine?

  4. #4
    Join Date
    Apr 2012
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    Re: Ubuntu 12.04 LTS Wi-Fi Problem

    Yes...do this first..
    Code:
    sudo modprobe -r iwlwifi
    sudo modprobe iwlwifi 11n_disable=1
    Don't boot..test to see if this fixes your problem.
    *IF and only if it does..then to make the fix permanent
    then do..
    Code:
    sudo gedit /etc/modprobe.d/iwlwifi.conf
    add this one line..
    Code:
    options iwlwifi 11n_disable=1
    save and close gedit...boot
    Craving anchovy, herring and squid pizza.....with clam sauce

  5. #5
    Join Date
    Sep 2013
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    7

    Re: Ubuntu 12.04 LTS Wi-Fi Problem

    Nope.. Sorry, but this doesn't seem to work. It continues to ask for my credentials every two minutes and is unable to connect to the net. Any other suggestions?

  6. #6
    Join Date
    Apr 2012
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    Re: Ubuntu 12.04 LTS Wi-Fi Problem

    Hi,have you checked your network manager wireless settings?
    as in edit your connection and verify all is correct?
    Craving anchovy, herring and squid pizza.....with clam sauce

  7. #7
    Join Date
    Oct 2009
    Location
    Reykjavk, sland
    Beans
    9,966
    Distro
    Lubuntu 14.10 Utopic Unicorn

    Re: Intel Centrino Advanced-N 6235 / Ubuntu 12.04 LTS Wi-Fi Problem

    New hardware and old software is a bad combination.

    A number of bug fixes has been added in 12.10 and 13.04, for example
    https://bugs.launchpad.net/ubuntu/+s...x/+bug/1180256

    As a first step I would recommend 13.04 (or 13.10 beta, if you want to see what the near future will bring).
    About problems due to upgrading
    Bringing old hardware back to life.
    Please visit Quick Links -> Unanswered Posts

  8. #8
    Join Date
    Sep 2013
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    7

    Re: Intel Centrino Advanced-N 6235 / Ubuntu 12.04 LTS Wi-Fi Problem

    Hi,have you checked your network manager wireless settings?
    as in edit your connection and verify all is correct?
    Ya, I have checked it, and all is well. I can say this as it used to work earlier with another wi-fi router. The earlier router had a WEP type security, but this one has a WPA2-Enterprise type security. That is about all the difference that I can find between the two.

    New hardware and old software is a bad combination.

    A number of bug fixes has been added in 12.10 and 13.04, for example
    https://bugs.launchpad.net/ubuntu/+s...x/+bug/1180256

    As a first step I would recommend 13.04 (or 13.10 beta, if you want to see what the near future will bring).
    I understand, but to get that update, I need to get connected to the internet. I can download the file from Windows, but I don't know how to install the file without removing my Windows 7 version.

  9. #9
    Join Date
    Oct 2009
    Location
    Reykjavk, sland
    Beans
    9,966
    Distro
    Lubuntu 14.10 Utopic Unicorn

    Re: Intel Centrino Advanced-N 6235 / Ubuntu 12.04 LTS Wi-Fi Problem

    You can download the 13.04 ISO in Windows or Buntu as you prefer. Unetbootin, which creates the USB stick, also works in both.

    Please post again when you have that working.
    About problems due to upgrading
    Bringing old hardware back to life.
    Please visit Quick Links -> Unanswered Posts

  10. #10
    Join Date
    Sep 2013
    Beans
    7

    Re: Intel Centrino Advanced-N 6235 / Ubuntu 12.04 LTS Wi-Fi Problem

    Sorry for the late reply, got busy...
    Yeah, I have that iso file and the disc image up and running. There are a few folders and there is a wubi.exe file. Some autorun file is also there. I ran the wubi application, but it is asking me to choose where to create the ubuntu partition. I want to replace my ubuntu 12.04 with this new version. So, what do I do? Do I install it with a new partition or do I have to free up my previous ubuntu partition. If so, how?

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