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Thread: Broadcom BCM4311, Ubuntu 12.04 / 13.04

  1. #11
    Join Date
    Dec 2011
    Beans
    5

    Smile Re: ubuntu 12.04 no wireless internet

    Thank You very very much. I was struggling for two days and then search resulted in your post!!! it works! thanks a lot once again

  2. #12
    Join Date
    Sep 2012
    Beans
    2

    Talking Re: ubuntu 12.04 no wireless internet

    I cannot thank you enough for this, I nearly reinstalled my OS until I saw this.

    I am jumping for joy!

  3. #13
    Join Date
    Oct 2012
    Beans
    8

    Re: ubuntu 12.04 no wireless internet

    Quote Originally Posted by chili555 View Post
    Please try this:
    Code:
    sudo apt-get remove --purge bcmwl-kernel-source
    sudo apt-get install linux-firmware-nonfree
    Reboot and let us have your report.
    I am new to Linux. Installed Ubuntu 12.04 on a Dell Latitude D430. After installing, I was suggested to wire connect the machine to get Internet, which I did, updated the system, and it works wired. Wireless is what's killing me.

    In systems settings, under additional drivers, the driver for the machine is there and active.

    I tried 2 two commands:
    sudo apt-get remove --purge bcmwl-kernel-source sudo apt-get install linux-firmware-nonfree



    Got the same terminal response as Josh Rabbit, rebooted, I still don't get signal at the hot spot.

    One question though, Do I soppose to get a message saying "Networks Available"? like in Windows?

  4. #14
    Join Date
    Oct 2012
    Beans
    8

    Re: ubuntu 12.04 no wireless internet

    Quote Originally Posted by chili555 View Post
    Please try this:
    Code:
    sudo apt-get remove --purge bcmwl-kernel-source
    sudo apt-get install linux-firmware-nonfree
    Reboot and let us have your report.
    New to Linux, installed Ubuntu 12.04 on a Latitude D430. Wired connection works, that is how I updated the system. wireless is whats killing me. the driver is there, in additional drivers and active. I tried this 2 commands, got the same results as Josh Rabbit, rebooted, still don't have signal at a hot spot. It should detect signal as in windows correct? What do I do next. Heeelp!

  5. #15
    Join Date
    Aug 2005
    Location
    West of the Animas
    Beans
    20,228
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: ubuntu 12.04 no wireless internet

    Quote Originally Posted by rogersaavedra View Post
    New to Linux, installed Ubuntu 12.04 on a Latitude D430. Wired connection works, that is how I updated the system. wireless is whats killing me. the driver is there, in additional drivers and active. I tried this 2 commands, got the same results as Josh Rabbit, rebooted, still don't have signal at a hot spot. It should detect signal as in windows correct? What do I do next. Heeelp!
    Do you have the exact same device as the original poster?
    Broadcom Corporation BCM4311 802.11b/g WLAN [14e4:4311]
    Please check:
    Code:
    lspci -nn | grep 0280
    Please post:
    Code:
    rfkill list all
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  6. #16
    Join Date
    Apr 2011
    Beans
    2

    Re: ubuntu 12.04 no wireless internet

    @chili555

    thank you.

  7. #17
    Join Date
    Jan 2013
    Beans
    2

    Re: ubuntu 12.04 no wireless internet

    @chili555

    Thanks.

  8. #18
    Join Date
    Feb 2013
    Beans
    27

    Re: ubuntu 12.04 no wireless internet

    Quote Originally Posted by chili555 View Post
    Please try this:
    Code:
    sudo apt-get remove --purge bcmwl-kernel-source
    sudo apt-get install linux-firmware-nonfree
    Reboot and let us have your report.
    Thank you Chili you are the $h!t.. this works great in 12.10 fixed my wifi great!!

    I added this to it and my internet is flying now I am getting 30Mbs/6Mbs over wifi:

    Disables Ipv6:
    Code:
    sudo gedit /etc/modprobe.d/bad_list
    Code:
    alias net-pf-10 off
    This adjusts TCP window size:


    Code:
    sudo gedit /etc/sysctl.conf
    If you choose a windows packet size that is too big, you will notice slower broadband performance (524288 works for me). If you notice a slow down, then reduce your window size.
    The largest size you can use is 65536, however these are the three settings that seem to work best:
    524288
    262144
    131072
    Which are all multiples of 1024 (or 1K).
    Now add the following to the end of the file:
    net.core.rmem_default = 524288
    net.core.rmem_max = 524288
    net.core.wmem_default = 524288
    net.core.wmem_max = 524288
    net.ipv4.tcp_wmem = 4096 87380 524288
    net.ipv4.tcp_rmem = 4096 87380 524288
    net.ipv4.tcp_mem = 524288 524288 524288
    net.ipv4.tcp_rfc1337 = 1
    net.ipv4.ip_no_pmtu_disc = 0
    net.ipv4.tcp_sack = 1
    net.ipv4.tcp_fack = 1
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.tcp_timestamps = 1
    net.ipv4.tcp_ecn = 0
    net.ipv4.route.flush = 1


    Now save
    After adding these line you do not need to reboot, instead just reset the file by issuing this command:
    sudo sysctl -p
    After completing this, you should notice improved web surfing speed. If not, remember to go back and adjust your TCP window size and try again.

  9. #19
    Join Date
    Aug 2005
    Location
    West of the Animas
    Beans
    20,228
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: ubuntu 12.04 no wireless internet

    sudo gedit /etc/modprobe.d/bad_list
    Everything in modprobe.d needs to be a conf file, so this will work better as:
    Code:
    sudo gedit /etc/modprobe.d/bad_list.conf
    Thanks for your kind (??) comments.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  10. #20
    Join Date
    Mar 2013
    Beans
    2

    Re: Broadcom BCM4311, Ubuntu 12.04

    i also have problems but on a inspirion 1545 and my rfkill list says
    user@user-Inspiron-1545:~$ rfkill list all
    0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
    1: dell-wifi: Wireless LAN
    Soft blocked: yes
    Hard blocked: yes

    what do i do

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