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Thread: no wireless in dell inspiron 1520 with 12.04

  1. #1
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    Red face no wireless in dell inspiron 1520 with 12.04

    I am brand new to ubuntu and I just installed 12.04 on my dell, had winxp before and the wireless worked just fine.

    I was reading other posts with solutions like uninstalling the preset drivers and everything but didn`t work so i decided to post.

    lspci -nn | grep 0280 output was

    Code:
    0c: 00.0 network controller [0280]: Broadcom Corporation BCM4311 802.11b/g WLAN [14e4:4311] (rev 01)

  2. #2
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    Re: no wireless in dell inspiron 1520 with 12.04

    Red,

    Do you have access to working ethernet cable?

    If you do we can get it up with Synaptic Packager or terminal
    commands..
    If not there are other ways... I can even drop a file here and we can walk you though the installation.
    Boot Info Script
    Ubuntu User number is # 32763
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  3. #3
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    Lightbulb Re: no wireless in dell inspiron 1520 with 12.04

    I don`t have ethernet connection with that laptop, but installing that file you say sounds good

    It would be deeply appreciated, thank you.

  4. #4
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    Re: no wireless in dell inspiron 1520 with 12.04

    Okay here is the b43.zip folder You can put it on a flash drive and then plug in the flash drive in the laptop. Extract the b43 folder to the Desktop.

    Open a terminal
    Code:
    cd Desktop
    Code:
    ls
    Those will get you to the Desktop and ls will show the b43 folder

    In terminal

    Code:
    sudo mv b43 /lib/firmware
    That will move the b43 to the correct directory.

    Hopefully in a few seconds your wifi light will come on, Sign in to your wifi access point.
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  5. #5
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    Re: no wireless in dell inspiron 1520 with 12.04

    I followed the steps you posted and moved the b43 folder but there has been no change.

    Did a couple of reboots too, turned the WiFi switch on and off but nothing

    Am I missing something there?

  6. #6
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    Re: no wireless in dell inspiron 1520 with 12.04

    When you extracted the b43.zip to Desktop a folder appeared b43 correct?
    When you did the sudo mv b43 the folder left the Desktop correct?
    Be sure the folder b43 is now in /lib/firmware.

    In terminal try

    Code:
    sudo modprobe b43
    That should give the b43 a kick to get going. If it does not reboot with wifi we
    might have a blacklist problem.

    Did you try the STA driver before?

    Be sure wifi switch is on

    Code:
    rfkill list
    and

    Code:
    lsmod
    That will tell us if the b43 module and the ssb are loading and might show if a conflict exists.

    If all this does not get it the Networking/Wireless Forum is a great resource. I used to hang there myself.
    Boot Info Script
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  7. #7
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    Re: no wireless in dell inspiron 1520 with 12.04

    Had the same problem with the Inspiron 1525, till I realised that the hardware switch has to be ON at boot time, otherwise I had no wireless at all, even after turning it on and there seems to be no way to get it back from within Ubuntu without rebooting.

    In other versions of Ubuntu you could turn the switch on at any time, not with 12.04. Now I have to make sure the switch is on before I hit the power button.

    You may have already tried that, but though I should mention it, just in case
    Dell XPS 14 Ultrabook
    Intel Core i7-3517U 1.90GHz
    8GB RAM
    500GB Samsung HD

  8. #8
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    Re: no wireless in dell inspiron 1520 with 12.04

    Thanks a lot!
    This works perfect for me, after the modprobe.
    Dell Inspiron 1501

    Thanks again.

  9. #9
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    Talking Re: no wireless in dell inspiron 1520 with 12.04

    It is working now!! I checked for the b43 in the folder

    Exactly the same for me, after modprobe it worked beautifully.

    Absolutely true about the hardware switch has to be ON at startup, otherwise wont work until reboot

    thank you very much, I've learned a lot

  10. #10
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    Re: no wireless in dell inspiron 1520 with 12.04

    Quote Originally Posted by RedDriscoll View Post
    It is working now!! I checked for the b43 in the folder

    Exactly the same for me, after modprobe it worked beautifully.

    Absolutely true about the hardware switch has to be ON at startup, otherwise wont work until reboot

    thank you very much, I've learned a lot
    I am glad it all worked out for you Red. I was a little worried about the wifi working after a reboot but that would be another issue. Just as an aside, I had another thread on here that talks about keeping the b43 on a thumb drive for later use you might look through it for the future.

    http://ubuntuforums.org/showthread.php?t=1974013
    Last edited by nm_geo; May 8th, 2012 at 07:30 PM. Reason: added thread link
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