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  1. #1

    Help with Broadcom wireless :(

    Hi, I've gotten my wireless to work but it disconnected sometimes and I would have to run 'ifconfig wlan0 down' and then 'ifconfig wlan0 up' to get it working again.

    Now its completely stopped working, it seems to get stuck associating with my network for some reason. My key is correct though.

    My card:
    $ lspci | grep Broadcom
    01:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g (rev 01)
    My ifconfig:
    $ ifconfig
    eth0      Link encap:Ethernet  HWaddr 00:26:22:51:05:4D  
              inet addr:  Bcast:  Mask:
              inet6 addr: fe80::226:22ff:fe51:54d/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:56803 errors:0 dropped:0 overruns:0 frame:0
              TX packets:29868 errors:0 dropped:0 overruns:0 carrier:1
              collisions:0 txqueuelen:1000 
              RX bytes:83050660 (79.2 Mb)  TX bytes:2318656 (2.2 Mb)
    lo        Link encap:Local Loopback  
              inet addr:  Mask:
              inet6 addr: ::1/128 Scope:Host
              UP LOOPBACK RUNNING  MTU:16436  Metric:1
              RX packets:0 errors:0 dropped:0 overruns:0 frame:0
              TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0 
              RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
    wlan0     Link encap:Ethernet  HWaddr 00:26:5E:86:66:45  
              inet6 addr: fe80::226:5eff:fe86:6645/64 Scope:Link
              UP BROADCAST MULTICAST  MTU:1500  Metric:1
              RX packets:41 errors:0 dropped:0 overruns:0 frame:0
              TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:3372 (3.2 Kb)  TX bytes:2532 (2.4 Kb)
    And tons of info from running 'cat /var/log/daemon.log | grep NetworkManager':
    http :// Delete the space, I can't post a url yet
    (chestnut is my network)

    I have comcast and I heard its been having some problems, so maybe I should use a different dns? LIke google's?

  2. #2
    Linux Guru reed9's Avatar
    Join Date
    Feb 2009
    Boston, MA
    Broadcom cards are endlessly problematic it seems. Anyway, I have the same chipset.

    First thing, I see you're using the b43 driver. While this does now support the card you need to pass a couple options to the driver for it to work

    See if this helps
    modprobe -r b43
    modprobe b43 pio=1 qos=0
    If so add to /etc/modprobe.d/modprobe.conf the following line
    options b43 pio=1 qos=0
    I recall reading somewhere the downside to this is that it hurts performance for protocols other than http.

    Alternately, you can use the broadcom wl driver. This is what I'm currently using. For some reason, and this is new, it's started to go into a deep sleep if I leave the computer unattended for a while, and the card won't wake back up until I unload and reload the driver. I haven't figured out what the trouble is yet or if there is a fix, but it's only mildly annoying. Whether you'd suffer the same I couldn't say.

  3. #3
    Thanks alot for your help, I did what you said and it works now, though I can't say for how long. I sometimes use some SOCKS5 proxies, so hopefully it wont show.

    But I agree broadcom really is a bad choice for linux, unfortunately, I didn't really know much about linux when I bought my netbook.

  4. $spacer_open

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