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Old 12-12-2007, 08:51 AM   #1
Registered: Dec 2007
Location: Italy
Distribution: Ubuntu 8.10
Posts: 106

Rep: Reputation: 15
BIG Problem with Broadcom BCM4318

really appreciate if anyone could help me: It's about 1 month i'm trying to setup invain my wireless network connection on ubuntu 7.10, i've a dual boot computer with winxp that's working perfectly (surfing perfectly i mean...)

mi PCI card is a ASUS WL-138g V2 Wireless PCI Adapter
and my chip is the "monster" BCM4318 [AirForce One 54g]

taht's my "iwconfig" result:

lo no wireless extensions.
eth0 IEEE 802.11b/g ESSID:"DLINK_WIRELESS" Nickname:"Broadcom 4318"
Mode:Managed Access Point: Invalid
RTS thrff Fragment thrff
Link Quality=0/100 Signal level=-256 dBm Noise level=-256 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

but opening the Device Manager interface, in the components (mounted?) list
i can find my "nightmare" listed: BCM4318 [AirForce One 54g] 802.11g

and in the "advanced" chipset menu at the menuitem:  info.linux.driver: the value is "bcm43xx"

I also tryed to use ndiswrapper with bcmwl5a.inf driver, but it doesn't work too, but the true is that i wasn't be able to install and use correctly ndiswrapper, too much difficult for me...

is it wrong or it seems that my PCI adapter is correctly installed?
but wi the network in always down? obviously I've configured my network (ESSID, DHCP ecc. olaso giving static ip and DNS), but nothing to do, the network is everytimes not working
Old 12-12-2007, 10:49 AM   #2
Senior Member
Registered: Apr 2001
Location: Perry, Iowa
Distribution: Mepis , Debian
Posts: 2,692

Rep: Reputation: 45
the bcm43xx driver does not yet work correctly with the 4318, so stop banging your head against it,you will have to use ndiswrapper

you will most likely have to blacklist the bcm43xx driver to get ndiswrapper to work

bcmwl5a.inf is the proper module for the 4318 so it should work (works for my 4318 anyway)

not up on my *buntu's but i'm sure someone will come along with specifics.or search blacklist at the ubuntu or ndiswrapper site(s).
Old 12-12-2007, 12:52 PM   #3
Registered: Dec 2007
Location: Italy
Distribution: Ubuntu 8.10
Posts: 106

Original Poster
Rep: Reputation: 15
thanks rshaw i've tried to follow your prescription way but with no success:...

first I've blacklisted bcm43xx, then I made the follow steps

sudo ndiswrapper -i /home/alex/desktop/bcmwl5a.inf
and to be sure also...

sudo ndiswrapper -i /home/alex/desktop/bcmwl5.inf
but each time the sysm replayed:

bcmwl5 driver already installed

bcmwl5a driver already installed
then I've tried to verify my job with:

sudo ndiswrapper -l
and the orrific result was:

bcmwl5: invalid driver!
and, obviously
bcmwl5a: invalid driver!
any suggestion? I'm very disoriented...
Old 12-14-2007, 08:50 AM   #4
Registered: Mar 2004
Location: Scotland
Distribution: Debian Sid / Kubuntu
Posts: 170

Rep: Reputation: 30
have you installed the module?

sudo modprobe ndiswrapper

I just put ndiswrapper into /etc/modules to get it to start at runtime.

The supplied drivers that came with my laptop did not work with ndiswrapper, so I did a bit of googling to get some. Drop me a PM with your email and I will forward them to you.

Installing the 2 .inf files may have made it unstable, best to remove and start again.

There is also the package ndisgtk in the repos that will give you a nice GUI to do it all.

Are you using the 64bit version? there is/was a bug in ubuntu which crashed the system effectively unloading all modules. Compiling the latest ndiswrapper from source fixed this, I don't know if its been fixed.


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