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Thread: Broadcom BCM4312

  1. #1
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    Broadcom BCM4312

    Hi,

    I'm just recently after making the move from Xp to Lubuntu on a Dell Inspiron 1501. After hours of meddling I managed to get the issue with the wireless sorted. (Although I tried so many steps I'm still unsure which one did the trick! ). I find it great, laptop has become practically silent while running and is working great for the basics.

    My question is as follows and I'd be grateful for the help, I have tried to use a Lubuntu Live USB on another Dell laptop with the same broadcom issue, is it possible to copy a certain set of folders from the laptop that is working and move them across?

    I saw it mentioned on another site while searching the initial problem but cannot remember where!

    Thanks.

  2. #2
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    Ubuntu 16.10 Yakkety Yak

    Re: Lubuntu Broadcom Question

    It is possible; however, it may or may not properly drive the device! Are the devices in the respective devices exactly the same?
    Code:
    lspci -nn | grep 0280
    Is the kernel version the same?
    Code:
    uname -mr
    If there are differences, then even if you copy over the driver, it probably won't work.

    Let's start by hearing the details of each from the commands above.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  3. #3
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    Re: Lubuntu Broadcom Question

    Hi Chili,

    Ok the result of the commands are

    0b:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)

    &

    3.11.0-12-generic i686.

    That's from the Dell Inspiron 1525. IIRC the device in the 1501 was not the same, it was 4311.

    Would I be correct in saying that linux-firmware-nonfree would be the solution for both of those problems?

  4. #4
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    Re: Lubuntu Broadcom Question

    Quote Originally Posted by dec2 View Post
    Hi Chili,



    Would I be correct in saying that linux-firmware-nonfree would be the solution for both of those problems?
    Correct. Are you all set or do you need additional guidance?
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  5. #5
    Join Date
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    Ubuntu 12.04 Precise Pangolin

    Re: Broadcom BCM4312

    I still can't connect even after installing linux-firmware-nonfree.
    I tried:
    - unloading all drivers and loading only b43 per http://wireless.kernel.org/en/users/...a ; purged now

    Acer aspire one
    lubuntu 14.04, updated
    Code:
    ~$ lspci -nn | grep 0280
    01:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)
    uz1@aspireone:~$ uname -mr
    3.13.0-24-generic i686
    I have limited access to this computer so I've acquired as much info as I could; please take a look at the attachment.https://onedrive.live.com/redir?resi...nt=file%2c.txt
    Last edited by Bucic; April 17th, 2014 at 11:48 PM.

  6. #6
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    Re: Broadcom BCM4312

    It actually looks pretty good. Please reboot with the ethernet detached. Then do some checks. Is a wireless interface created, ideally wlan0?
    Code:
    iwconfig
    Is the wireless switch or key combination set to enable wireless?
    Code:
    rfkill list all
    Does the interface scan and see networks?
    Code:
    sudo iwlist wlan0 scan
    Generally, if it scans, it can connect.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  7. #7
    Join Date
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    Ubuntu 12.04 Precise Pangolin

    Re: Broadcom BCM4312

    Code:
    ~$ iwconfig
    wlan0     IEEE 802.11bg  ESSID:off/any  
              Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Power Management:off
              
    hso0      no wireless extensions.
    
    lo        no wireless extensions.
    
    eth0      no wireless extensions.
    
    
    
    ~$ rfkill list all
    0: phy0: Wireless LAN
    	Soft blocked: no
    	Hard blocked: no
    1: hso-0: Wireless WAN
    	Soft blocked: no
    	Hard blocked: no
    2: acer-wireless: Wireless LAN
    	Soft blocked: no
    	Hard blocked: no
    3: acer-bluetooth: Bluetooth
    	Soft blocked: yes
    	Hard blocked: no
    4: acer-threeg: Wireless WAN
    	Soft blocked: no
    	Hard blocked: no
    Wireless networks are detected. Still no tray icon though. I also don't remember how to connect to a chosen network from terminal, sorry.


    Thanks for bearing with me!

  8. #8
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    Re: Broadcom BCM4312

    Does the icon appear if you open a terminal and do:
    Code:
    nmm-applet &
    If so, can you click the icon, see your network and connect? If so, we'll work on the mystery of the disappearing Network Manager icon.

    If not, is Network Manager even running?
    Code:
    ps aux | grep network-manager
    If not, does it start?
    Code:
    sudo service network-manager start
    Please see attached.
    Attached Images Attached Images
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  9. #9
    Join Date
    Apr 2014
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    Re: Broadcom BCM4312

    Chili thanks very much for the assistance! I think (at least I hope!) I've a better understanding of it now!

  10. #10
    Join Date
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    Ubuntu 12.04 Precise Pangolin

    Re: Broadcom BCM4312

    nm-applet &
    started the applet. Without sudo. No wifis listed. Added new wifi conn. via 'Modify...' I had to manually select wlan0 IP ...5) from the drop down list. It didn't connect.

    sudo iwlist wlan0 scan
    still shows available networks.

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