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Thread: Backtrack 5 stopped detecting my Wlan card.

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  1. #1
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    Unhappy Backtrack 5 stopped detecting my Wlan card.

    Hi..

    I am using BT5 and i am also new to this.
    I have dual boot machine.
    My BT5 was working fine till morning and all of a sudden it stopped detecting WLAN card.So no wireless networks are detected.
    But the same card works fine for Win7...I formatted it and reinstalled the BT5. But still I am facing the same problem..

    It would be great if you guys can help.

  2. #2
    Senior Member ShadowMaster's Avatar
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    Default Re: Backtrack 5 stopped detecting my Wlan card.

    this wont help with your current card, but if you buy a realtek wireless usb adapter, itll work fine. its only like 25-35 dollars for a BT5 compatible card, and it extends range and capabilities so its worth it. i use one.

  3. #3
    Very good friend of the forum maverik35's Avatar
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    Default Re: Backtrack 5 stopped detecting my Wlan card.

    Quote Originally Posted by ashu2188 View Post
    Hi..

    I am using BT5 and i am also new to this.
    I have dual boot machine.
    My BT5 was working fine till morning and all of a sudden it stopped detecting WLAN card.So no wireless networks are detected.
    But the same card works fine for Win7...I formatted it and reinstalled the BT5. But still I am facing the same problem..

    It would be great if you guys can help.
    Please, we need more info as to the kind of usb device you are using (model and chipset if possible), if you are starting the networking services, the lsmod, lspci and lsusb outputs.

  4. #4
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    Default Re: Backtrack 5 stopped detecting my Wlan card.

    Hi, Is it a internal wlan card? i thought BT5 only supported USB dongles, I might be wrong douh..

  5. #5
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    Default Re: Backtrack 5 stopped detecting my Wlan card.

    I am using an internal broadcom b43 14e4:4320 and it works fine with BT5. It usually only stops working after I run like aircrack or after about 5-10 hours I have to reboot. But I rarely do that so it works great. . It would be really useful if you could give us some more info about your card (at least the brand).

  6. #6
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    Default

    It does support internal cards..

    I will try that and let you knw the results.

    shutdown ur BT and then go to settings of that VM machine and enable usb. It ll do the job

    iwconfig shows me wlano but with power off and all such options... will be posting the detail of iwconfig asap.

    my wlan card is of intel iwl3945abg.
    My laptop model is HP dv2500 series.

    warlier it was working fine with same wlan card... Buying usb adapter is another solution but i want to work on this..
    Last edited by g0tmi1k; 10-20-2011 at 08:07 AM. Reason: Merged

  7. #7
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    Default Re: Backtrack 5 stopped detecting my Wlan card.

    You can order a Alfa AWUS036H 1000mW USB for $30, I purchased one a month ago and never looked back. I get up to 25 AP's with it and I'm able to inject packets into about 18 of them. Here's a full list of the supported wireless devices

    Quote Originally Posted by ashu2188 View Post
    It does support internal cards..

    I will try that and let you knw the results.

    shutdown ur BT and then go to settings of that VM machine and enable usb. It ll do the job

    iwconfig shows me wlano but with power off and all such options... will be posting the detail of iwconfig asap.

    my wlan card is of intel iwl3945abg.
    My laptop model is HP dv2500 series.

    warlier it was working fine with same wlan card... Buying usb adapter is another solution but i want to work on this..
    Try running this is a terminal and post the output of it
    Code:
    dmesg | grep iwl
    Also try
    Code:
    ifconfig wlan0 down
    ifconfig wlan0 up
    If you get SIOCSIFFLAGS: Unknown error 132 when putting the interface up try the following:
    Code:
    rmmod ath5k
    rfkill block all
    rfkill unblock all
    modprobe ath5k
    rfkill unblock all
    ifconfig wlan0 up
    If you still are having trouble with putting the interface up you can try this:
    1. Download and extract http://intellinuxwireless.org/iwlwif...-15.32.2.9.tgz
    2. Follow the instructions provided in the readme (copy the binary to /lib/firmware)

    Or:
    Code:
    cp /lib/firmware-2.6.34/iwlwifi-3945-2.ucode /lib/firmware-2.6.35.8/iwlwifi-3945-2.ucode
    If it's still not working post the output of this:
    Code:
    tail /var/log/dmesg
    I'd also recommend taking a look at this thread even though it's BT4 it still might help.

  8. #8
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    Default Re: Backtrack 5 stopped detecting my Wlan card.

    try going into wicd and click on Preferences than see if the name of the wireless interface is there..such as wlan0 or wlan1..if not type it in..also sometimes my laptop while backtrack is loading up doesn't turn on the wifi card..so while it's booting up i'll have to hit "fn and than F2" to activate my wifi card..it's retarded..but it could be happening to you..check it out

  9. #9
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    Default Re: Backtrack 5 stopped detecting my Wlan card.

    Try
    /etc/init.d/wicd start
    /etc/init.d/networking
    Also, what do you get on iwconfig?

  10. #10
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    Default Re: Backtrack 5 stopped detecting my Wlan card.

    hi
    I have wlan usb. My Backtrack is installed in Virtual Box but I can´t find the usb in baktrack.

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