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Thread: Broadcom WLAN issue

  1. #1
    Join Date
    Jun 2010
    Beans
    3

    Broadcom WLAN issue

    I dual boot windows xp and ubuntu 10.04 LTS and the wireless card works perfectly fine in xp so I know its not a hardware/network issue. In ubuntu, it detects wireless networks, will connect to network and work for about 20 seconds.

    02:04.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)
    Subsystem: Broadcom Corporation Device 0449
    Flags: bus master, fast devsel, latency 64, IRQ 11
    Memory at e0208000 (32-bit, non-prefetchable) [size=8K]
    Kernel driver in use: b43-pci-bridge
    Kernel modules: ssb
    and this is what I get when i run a ping on ubuntu

    PING 4.2.2.2 (4.2.2.2) 56(84) bytes of data.
    64 bytes from 4.2.2.2: icmp_seq=1 ttl=55 time=26.4 ms
    64 bytes from 4.2.2.2: icmp_seq=2 ttl=55 time=22.7 ms
    64 bytes from 4.2.2.2: icmp_seq=3 ttl=55 time=21.8 ms
    64 bytes from 4.2.2.2: icmp_seq=4 ttl=55 time=22.1 ms
    64 bytes from 4.2.2.2: icmp_seq=5 ttl=55 time=21.6 ms
    64 bytes from 4.2.2.2: icmp_seq=6 ttl=55 time=22.9 ms
    64 bytes from 4.2.2.2: icmp_seq=7 ttl=55 time=22.4 ms
    64 bytes from 4.2.2.2: icmp_seq=8 ttl=55 time=21.7 ms
    64 bytes from 4.2.2.2: icmp_seq=9 ttl=55 time=23.0 ms
    64 bytes from 4.2.2.2: icmp_seq=10 ttl=55 time=23.4 ms
    64 bytes from 4.2.2.2: icmp_seq=11 ttl=55 time=22.0 ms
    64 bytes from 4.2.2.2: icmp_seq=12 ttl=55 time=21.3 ms
    64 bytes from 4.2.2.2: icmp_seq=13 ttl=55 time=30.2 ms
    64 bytes from 4.2.2.2: icmp_seq=14 ttl=55 time=22.0 ms
    64 bytes from 4.2.2.2: icmp_seq=15 ttl=55 time=30.1 ms
    64 bytes from 4.2.2.2: icmp_seq=16 ttl=55 time=23.1 ms
    64 bytes from 4.2.2.2: icmp_seq=17 ttl=55 time=22.5 ms
    64 bytes from 4.2.2.2: icmp_seq=18 ttl=55 time=23.0 ms
    64 bytes from 4.2.2.2: icmp_seq=19 ttl=55 time=23.8 ms
    64 bytes from 4.2.2.2: icmp_seq=20 ttl=55 time=23.2 ms
    64 bytes from 4.2.2.2: icmp_seq=21 ttl=55 time=25.1 ms
    64 bytes from 4.2.2.2: icmp_seq=22 ttl=55 time=22.0 ms
    64 bytes from 4.2.2.2: icmp_seq=23 ttl=55 time=22.5 ms
    64 bytes from 4.2.2.2: icmp_seq=24 ttl=55 time=23.1 ms
    64 bytes from 4.2.2.2: icmp_seq=25 ttl=55 time=37.3 ms
    64 bytes from 4.2.2.2: icmp_seq=26 ttl=55 time=23.4 ms
    64 bytes from 4.2.2.2: icmp_seq=27 ttl=55 time=27.3 ms
    64 bytes from 4.2.2.2: icmp_seq=28 ttl=55 time=24.4 ms
    64 bytes from 4.2.2.2: icmp_seq=29 ttl=55 time=21.4 ms
    64 bytes from 4.2.2.2: icmp_seq=30 ttl=55 time=25.1 ms
    64 bytes from 4.2.2.2: icmp_seq=31 ttl=55 time=230 ms
    64 bytes from 4.2.2.2: icmp_seq=32 ttl=55 time=24.5 ms
    64 bytes from 4.2.2.2: icmp_seq=33 ttl=55 time=227 ms
    64 bytes from 4.2.2.2: icmp_seq=34 ttl=55 time=22.3 ms
    64 bytes from 4.2.2.2: icmp_seq=35 ttl=55 time=1401 ms
    64 bytes from 4.2.2.2: icmp_seq=37 ttl=55 time=26.2 ms
    64 bytes from 4.2.2.2: icmp_seq=38 ttl=55 time=236 ms
    64 bytes from 4.2.2.2: icmp_seq=39 ttl=55 time=27.9 ms
    64 bytes from 4.2.2.2: icmp_seq=40 ttl=55 time=230 ms
    and it continues on after this alternating between a normal 20ms and high ping over 200ms. The connection refuses to load anything off the internet/local network.

    I'm open to any suggestion on fixing this.
    Last edited by DragonJC; June 7th, 2010 at 03:39 AM.

  2. #2
    Join Date
    Jun 2010
    Beans
    3

    Re: Broadcom WLAN issue

    bump

  3. #3
    Join Date
    May 2010
    Location
    /tmp or /dev/null
    Beans
    163
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Broadcom WLAN issue

    Hello,

    If I'm right (which I hope I am ), the problem is the b43 driver. In my experience, it has been buggy and makes annoying, repetitive connection dropouts. Did I mention speed is stuck at 1 MB/s? Anyway, your best bet is to try the Broadcom Proprietary STA driver. To install it, go to System > Administration > Hardware Drivers. Install the driver by "activating" it. Reboot, and hopefully wireless will work.

    If it doesn't post the output of
    Code:
    lshw -c network
    Running Ubuntu 10.04 on a Toshiba Satellite A505. You will not BELIEVE all the problems I have with it. But hey, that's all part of the fun! Even if fixing something does take hours...

  4. #4
    Join Date
    Aug 2009
    Location
    Norfolk, Virginia
    Beans
    56
    Distro
    Kubuntu 11.10 Oneiric Ocelot

    Re: Broadcom WLAN issue

    have you tried b43-fwcutter... just worth a try.
    (apt-get install b43-fwcutter)

  5. #5
    Join Date
    May 2010
    Location
    Gilbert, Arizona
    Beans
    38
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Broadcom WLAN issue

    I have had this same problem! to fix it, plug your laptop into an ethernet cable, go to Systerm>Administration>Hardware Drivers and install the stuff it sees for the wireless.
    Once you do that, i recommend installing Wicd network manager. it is a great utility for scanning and autoconnecting to networks.

  6. #6
    Join Date
    Jun 2010
    Beans
    3

    Re: Broadcom WLAN issue

    You guys are going to love this....

    So the issue was the fact I used a WEP key. I took my laptop to work and connected it to the wireless there that uses WPA and walla, I have a stable connection to the network. So I took it home and switched my home network to WPA and it works fine now too...

    The B43 driver must be having issues with WEP I think.

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