nl80211 driver problem

Alan Jachimiak aljachimiak at gmail.com
Fri Jul 16 12:29:40 EDT 2010


Hello:

See below for output of debug (-d and -dd)

[root at Joshiba ajachimiak]# hostapd -d /etc/hostapd/hostapd.conf
Configuration file: /etc/hostapd/hostapd.conf
ctrl_interface_group=10 (from group name 'wheel')

ioctl[SIOCGIFFLAGS]: No such device
Could not read interface flags ()
nl80211 driver initialization failed.
: Unable to setup interface.

rmdir[ctrl_interface]: No such file or directory
[root at Joshiba ajachimiak]# hostapd -dd /etc/hostapd/hostapd.conf
Configuration file: /etc/hostapd/hostapd.conf
ctrl_interface_group=10 (from group name 'wheel')

ioctl[SIOCGIFFLAGS]: No such device
Could not read interface flags ()
nl80211 driver initialization failed.
: Unable to setup interface.

rmdir[ctrl_interface]: No such file or directory

I wouldn't mind attempting to compile something, but hopefully we could
identify the problem before attmpting other actions that may not resolve the
problem.

Two questions:

I have gone to network manager and disabled wireless.  Is there another way
to make sure it isn't using the card?

Is using b43 part of the problem?  Perhaps you could give me instructions on
how to unload that driver and load a different one "nl80211"?

FYI - I don't know how to compile then install...  I'll try, but I'll need
very specific instructions and code to type in.

Thanks,

Al


On Fri, Jul 16, 2010 at 3:21 AM, Holger Schurig <holgerschurig at gmail.com>wrote:

> > What are those debug messages from?
>
> From the kernel.
>
> You can compile the kernel wireless code to include debug messages. In this
> case you see when you associate/disassociate.
>
> Your idea that this messages are from wpa_supplicant is wrong. ONLY kernel
> messages can end up in "dmesg". wpa_supplicant's messages can end up in
> /var/log/*, thought.
>
>
> > It looks like you are able to successfully associate to an AP in managed
> > mode. What command did you type to get said above messages?
>
> Probably no command typed at all. Many distribitions install and run
> wireless
> stuff by default, e.g NetworkManager.
>
> However, Alan, make sure that NetworkManager doesn't use your card. Then
> use
> "ifconfig -a" to find out your interface name, e.g. usually "wlan0".
> Make sure that your hostapd configuration use the correct device.
>
> If this fails, run hostapd with -d or -dd and provide that log to this
> mailing
> list.
>
>
> --
> Homepage: http://www.holgerschurig.de
>
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