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Thread: Wireless not working (BCM4312)

  1. #1
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    Wireless not working (BCM4312)

    I just installed Kramic Koala, but the wireless does not work. It did work in Ubuntu 9.04. I think it is because of the Kernel that it doesn't work. I tired to install, and reinstall, the package bcmwl-kernel-source but no luck. I tired to go to the Hardware Drivers, but it said "not in use." I tried to click "activate" but nothing happened. Is there any suggestions how to resolve this issue. I would really love a method that does not require internet access via a wired connections. I think that the only way to fix the problem is downgrading the kernel.

    Thanks for all your help.

  2. #2
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    Re: Wireless not working (BCM4312)

    Quote Originally Posted by kut77less View Post
    I just installed Kramic Koala, but the wireless does not work. It did work in Ubuntu 9.04. I think it is because of the Kernel that it doesn't work. I tired to install, and reinstall, the package bcmwl-kernel-source but no luck. I tired to go to the Hardware Drivers, but it said "not in use." I tried to click "activate" but nothing happened. Is there any suggestions how to resolve this issue. I would really love a method that does not require internet access via a wired connections. I think that the only way to fix the problem is downgrading the kernel.

    Thanks for all your help.
    You might try the following from the Terminal:
    Code:
    sudo modprobe -r b43 ssb wl
    sudo modprobe wl
    sudo iwlist scan
    If it produces any error messages, please post the error messages.

  3. #3
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    Re: Wireless not working (BCM4312)

    Quote Originally Posted by Ayuthia View Post
    You might try the following from the Terminal:
    Code:
    sudo modprobe -r b43 ssb wl
    sudo modprobe wl
    sudo iwlist scan
    If it produces any error messages, please post the error messages.
    everything expect "wl" works. It says "Fatal error module not present"

    any suggestions?

    Thanks

  4. #4
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    Re: Wireless not working (BCM4312)

    Can you check and see if the following two files exist:
    Code:
    ls /lib/modules/$(uname -r)/updates/dkms
    ls /var/lib/dkms/bcmwl/5.10.91.9+bdcom/2.6.31-14-generic/$(uname -m)/module

  5. #5
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    Re: Wireless not working (BCM4312)

    Quote Originally Posted by kut77less View Post
    I just installed Kramic Koala, but the wireless does not work...
    Go to this site & follow the instructions closely.

    By the way, I had just come across this while installing 9.10 on this laptop less than 30 minutes ago(!) For future reference, I found out about this from the system's dmesg. There's a note in there about needing firmware for Broadcom and to visit the above site (non-free issue). A thousand thank-yous to whoever was responsible for that pointer.

    Back to you, kut77less: Why are you using Wubi? Just curious... I've heard of it but not sure what the advantage is over a dual-boot e.g.

    hth,
    -Craig

  6. #6
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    Re: Wireless not working (BCM4312)

    Quote Originally Posted by craig.o View Post
    Go to this site & follow the instructions closely.

    By the way, I had just come across this while installing 9.10 on this laptop less than 30 minutes ago(!) For future reference, I found out about this from the system's dmesg. There's a note in there about needing firmware for Broadcom and to visit the above site (non-free issue). A thousand thank-yous to whoever was responsible for that pointer.

    Back to you, kut77less: Why are you using Wubi? Just curious... I've heard of it but not sure what the advantage is over a dual-boot e.g.

    hth,
    -Craig
    I have tried your suggestion before, but it didn't work. I will do what Ayuthia said, but it would be later because I can't access my laptop right now. I use Wubi instead of dual-boot because my brother is a mean person

  7. #7
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    Re: Wireless not working (BCM4312)

    Quote Originally Posted by Ayuthia View Post
    Can you check and see if the following two files exist:
    Code:
    ls /lib/modules/$(uname -r)/updates/dkms
    ls /var/lib/dkms/bcmwl/5.10.91.9+bdcom/2.6.31-14-generic/$(uname -m)/module
    Thanks
    I did this and found out that these files do not exist

    ls: cannot access /var/lib/dkms/bcmwl/5.10.91.9+bdcom/2.6.31-14-generic/x86_64/module: No such file or directory

    ls: cannot access /lib/modules/2.6.31-14-generic/updates/dkms: No such file or directory
    How would I get these files?

  8. #8
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    Re: Wireless not working (BCM4312)

    It should have come with bcmwl-kernel-source.

    You might try:
    Code:
    sudo dpkg-reconfigure bcmwl-kernel-source and then check to see if the files are there or not.
    It will attempt to configure the package again.

  9. #9
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    Re: Wireless not working (BCM4312)

    Quote Originally Posted by Ayuthia View Post
    It should have come with bcmwl-kernel-source.

    You might try:
    Code:
    sudo dpkg-reconfigure bcmwl-kernel-source and then check to see if the files are there or not.
    It will attempt to configure the package again.


    When I do that I get an error message.


    Error! Could not locate wl.ko for module bcmwl in the DKMS tree.

    You must run a dkms build for kernel 2.6.31-14-generic (x86_64) first.

    Any suggestions? Is there a manual way of adding the files?

    thanks

  10. #10
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    Re: Wireless not working (BCM4312)

    Check and see if you have the following directory:
    Code:
    ls /var/lib/dkms/bcmwl
    If you do and it returns something like
    Code:
    5.10.91.9+bdcom
    Try the following:
    Code:
    sudo dkms build -m bcmwl -v 5.10.91.9+bdcom
    If that is successful try:
    Code:
    sudo dkms install -m bcmwl -v 5.10.91.9+bdcom
    The first dkms command will build the Broadcom kernel module and create the wl.ko. The second command will install it.

    Hope that helps.

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