Wireless gets no ip [Solved - Changed driver]

Sedrik · Last edited by Sedrik on Sun Jun 10, 2012 1:56 pm; edited 1 time in total

Hi guys

I have a broadcom 43225 using the broadcom-sta driver (have tried with the in kernel ones too) and it gets no ip from dhcp. We have around 10 other devices that works fine on the network (among others the wired interface on the laptop).

How can I start debugging this? I feel lost.

Thanks
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NeddySeagoon · Posted: Sun Apr 01, 2012 12:17 pm Post subject:

Sedrik,

Make the problem space as small as possible. To get an IP, everything else must work, the wireless must associate, negiotiate crypto and be able to broadcast over the network link to find your dhcp server and get a response.

So what can we do to simplify the problem?
The first step is to turn off encryption on the access point, then that doesn't have to work. It also allows the use of iwconfig from wireless-tools and ifconfig to set up the wireless elements of the interface, then assign a static IP, just for testing. This assumes that its a link level problem you have.

Does your wireless interface appear in

Sedrik · Posted: Sun Apr 01, 2012 12:31 pm Post subject:

Hi NeddySeagoon

Thanks for the reply, sorry for the lack of information in my first message.

The network is associated

Sedrik · Posted: Mon Apr 09, 2012 10:43 am Post subject:

Bump.

I have been playing around a bit with this today and is able to get an ip if I turn off encryption completely. All ideas would be great!
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NeddySeagoon · Posted: Mon Apr 09, 2012 6:28 pm Post subject:

Sedrik,

Well, the obvious one first. Is the crypto key the same at vith ends?
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Sedrik · Posted: Tue Apr 10, 2012 3:21 am Post subject:

ultraslinky · Posted: Mon Apr 16, 2012 11:58 pm Post subject:

NeddySeagoon · Posted: Tue Apr 17, 2012 6:52 pm Post subject:

ultraslinky,

dhcpcd should only fall bacl to a IPv4 Link Local address when trying to get an address for a dhcp server has failed.
Do you have an agressive timeout set in /etc/conf.d/net for the wireless network ?
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NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

ultraslinky · Posted: Tue Apr 24, 2012 8:46 am Post subject:

Neddy, Actually i have no timeout set at all in /etc/conf.d/net, just the dhcpcd flags i just wrote above. I get a Local Link address about 1 every 4 times i connect, if i don't use that option to avoid it. That is, at my home router, my friend's router, my university router, it can happen anywhere so definitely not a router / dhcp server problem. I have no idea what causes it but it is fixed with that option

cach0rr0 · Posted: Wed Apr 25, 2012 5:39 am Post subject:

Gusar · Posted: Wed Apr 25, 2012 10:47 am Post subject:

The 43225 is supported by b43 and brcmsmac, so no need to mess with broadcom-sta.

Sedrik · Posted: Thu May 31, 2012 4:13 pm Post subject:

Is there anything else you need to enable?

I have switched to the b43 drivers in kernel, I have the b43-firmware package unmasked and installed but still I am unable to authenticate with the network.
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Sedrik · Posted: Thu May 31, 2012 6:24 pm Post subject:

After some more debugging I have gotten the card to connect to the network but the connection is dropped every 500s because it fails to receive probe responses.

I see alot of TKIP messages before the Probe log in dmesg, anyone that knows what might be up (I checked my kernel and TKIP is active)?
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NeddySeagoon · Posted: Thu May 31, 2012 6:44 pm Post subject:

Sedrik,

Please post your /etc/init.d/net file. The

Sedrik · Posted: Fri Jun 01, 2012 4:16 am Post subject:

Router logs says nothing interesting.
This is what dmesg says

cach0rr0 · Posted: Fri Jun 01, 2012 6:58 am Post subject:

any particular reason you opted for b43 instead of brcmsmac ?

b43 was bad news in the past. may have gotten better. the flavor of the day seems to be brcmsmac
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Sedrik · Posted: Wed Jun 06, 2012 4:41 pm Post subject:

I have never heard of bscmsmac before and have only had experience with broadcom-sta and the b43 drivers.

I looked at bscmsmac and the configuration says BCMA [=y]=n. I checked for BCMA support and it is activated but the options does not appear in the wireless driver section.

How do I enable it so that I can try that driver?

leiking · Tux's lil' helper Joined: 16 Jun 2011 Posts: 76

your dhcpcd doesnot manage the interface wlan0

Sedrik · Posted: Thu Jun 07, 2012 3:22 am Post subject:

Sedrik · Posted: Sun Jun 10, 2012 1:55 pm Post subject:

Finally got bcmmsmac up and running. The part I was completley oblivious to was that I had to download the firmware seperately.

Also, when I activated the HOSTAP option I got a kernel panic so avoid that.

Thanks for the support all, you rule!

*edit: Here are the firmware installation instructions http://linuxwireless.org/en/users/Drivers/brcm80211
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Gusar · Posted: Tue Jun 12, 2012 10:15 am Post subject:

There's a simpler way to get the firmware: