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Thread: Intel PRO Wireless 3945ABG problem

  1. #1
    Join Date
    Feb 2013
    Beans
    7

    Question Intel PRO Wireless 3945ABG problem

    Hello !
    Since i have installed Ubuntu, i cant use Wifi in my home, so i use Cable (LAN), at this moment
    Well, I can connect on network but Internet doesnt work, or sometimes working about 1-2 mins and stop !
    I tried much things but nothing helps !
    LAPTOP MODEL IS : HP nc6400
    Maybe the problem is x64 Ubuntu

  2. #2
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    19,426
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Intel PRO Wireless 3945ABG problem

    I assume the driver is iwl3945; confirm:
    Code:
    lsmod | grep iwl
    If so, please try:
    Code:
    sudo modprobe -r iwl3945
    sudo modprobe iwl3945 swcrypto=0
    Now will it stay connected? If it helps, we'll write one quick file and make it persistent.
    Chili's Folly: Intel NUC, i3-4010U, 120 GB SSD, 16 GB RAM, external 500 GB HDD, Ubuntu Saucy; small, silent and fast.

  3. #3
    Join Date
    Feb 2013
    Beans
    7

    Re: Intel PRO Wireless 3945ABG problem

    enes@anon-PC:~$ lsmod | grep iwl
    iwl3945 65160 0
    iwlegacy 104518 1 iwl3945
    mac80211 540032 2 iwl3945,iwlegacy
    cfg80211 206797 3 iwl3945,iwlegacy,mac80211
    enes@anon-PC:~$ sudo modprobe -r iwl3945
    [sudo] password for enes:
    WARNING: All config files need .conf: /etc/modprobe.d/ipwraw, it will be ignored in a future release.
    WARNING: All config files need .conf: /etc/modprobe.d/iwl3945, it will be ignored in a future release.
    WARNING: All config files need .conf: /etc/modprobe.d/iwlwifi.conf,, it will be ignored in a future release.
    enes@anon-PC:~$ sudo modprobe iwl3945 swcrypto=0
    WARNING: All config files need .conf: /etc/modprobe.d/ipwraw, it will be ignored in a future release.
    WARNING: All config files need .conf: /etc/modprobe.d/iwl3945, it will be ignored in a future release.
    WARNING: All config files need .conf: /etc/modprobe.d/iwlwifi.conf,, it will be ignored in a future release.

    New in Ubuntu, sorry if I do something wrong

    Well, same **** again !

  4. #4
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    19,426
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Intel PRO Wireless 3945ABG problem

    Let's do some housecleaning. I think it's likely that you have some conflicts going.
    Code:
    sudo rm /etc/modprobe.d/ipwraw 
    sudo rm /etc/modprobe.d/iwl3945
    sudo rm  /etc/modprobe.d/iwlwifi.conf
    gksudo gedit /etc/modprobe.d/iwl3945.conf
    Add a single line:
    Code:
    options iwl3945 swcrypto=0
    Proofread, save and close gedit. Reboot and give us your report. Make sure any ethernet cables and/or USB wireless devices are detached.

    After the reboot, does your wireless work better, worse or the same?
    Chili's Folly: Intel NUC, i3-4010U, 120 GB SSD, 16 GB RAM, external 500 GB HDD, Ubuntu Saucy; small, silent and fast.

  5. #5
    Join Date
    Feb 2013
    Beans
    7

    Re: Intel PRO Wireless 3945ABG problem

    Just follow what chili is saying, good job my friend and thanks for help ! [Solved] !

    lsmod | grep iwl

    sudo modprobe -r iwl3945
    sudo modprobe iwl3945 swcrypto=0

    (IF you get this WARNINGS like me) --->
    sudo rm /etc/modprobe.d/ipwraw
    sudo rm /etc/modprobe.d/iwl3945
    sudo rm /etc/modprobe.d/iwlwifi.conf

    gksudo gedit /etc/modprobe.d/iwl3945.conf

    alias wlan0 iwl3945
    options iwl3945 disable_hw_scan=0 (Thats my iwl3945.conf file)

    or options iwl3945 swcrypto=0
    Last edited by EnesTesla; March 2nd, 2013 at 07:26 PM.

  6. #6
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    19,426
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Intel PRO Wireless 3945ABG problem

    Glad it's working! Post back if we can help you in the future.
    Chili's Folly: Intel NUC, i3-4010U, 120 GB SSD, 16 GB RAM, external 500 GB HDD, Ubuntu Saucy; small, silent and fast.

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