Re: [Gumstix-users] Help with Overo Fire wifi error message (and limited functionality)

[Brett H. <bre...@gm...>]

All right, I have made some progress to the point where I have my gumstix
connecting my wifi network at boot reliably with WEP security.  Basically I
was about to give up and then magically got a connection after some random
config command (and celebrated); after a reboot, however, my new
/etc/network/interfaces file failed to work...  after some more reboots and
changing order of the if(w)config commands I got it to work a few more
times, but what was making it work / mot work was still unclear. Eventually
I realized that the wireless interface would not come up (or even flash the
blue LED as if it were trying) unless I had previously run an 'iwlist wlan0
scan'.  Maybe this is related to the error 'libertas: assoc: bss (null) not
in scan results' as if the essid I am setting is not in the scan results
because they don't exist?  I don't know what the deal is but with this
information I made my /etc/network/interfaces file read as follows:

[snip]
allow-hotplug wlan0
auto wlan0
        iface wlan0 inet static
        pre-up /sbin/iwconfig $IFACE mode managed
        pre-up /sbin/iwconfig $IFACE key abcde12345

        address 192.168.1.201
        netmask 255.255.255.0
        gateway 192.168.1.1

        post-up /sbin/iwlist $IFACE scan > /dev/null
        post-up /sbin/iwconfig $IFACE essid routerNetworkName
[/snip]

where (I think) I set the mode and wep key before bringing up wlan0 after
which I do the scan before finally setting the essid; The scan results are
large so I send it to /dev/null to prevent it from destroying the boot
messages.


Now on boot I get the output:
[snip]
Remounting root file system...
libertas_sdio: Libertas SDIO driver
libertas_sdio: Copyright Pierre Ossman
Caching udev devnodes
Populating dev cache
NET: Registered protocol family 10
libertas: 00:19:88:3d:1f:01, fw 9.70.7p0, cap 0x00000303
cfg80211: Calling CRDA for country: US
libertas: wlan0: Marvell WLAN 802.11 adapter
ADDRCONF(NETDEV_UP): wlan0: link is not ready
ALSA: Restoring mixer settings...
Cleaning: /etc/network/run/ifstate.
Configuring network interfaces... ADDRCONF(NETDEV_CHANGE): wlan0: link
becomes ready
SIOCADDRT: File exists
Failed to bring up wlan0.
done.
Starting portmap daemon: portmap.
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.all.rp_filter = 1
[/snip]

So, despite the output saying 'Failed to bring up wlan0' I have a working
ethernet connection to my router at boot.

A 'if
#ifdown wlan0
#ifup wlan0
I get the output


Is this process normal / necessary?  I am sure my /etc/network/interfaces
script isnt right because
1) 'SIOCADDRT: File exists' \n 'Failed to bring up wlan0' output
2) If I try to run an 'ifdown wlan0' after boot I get:


Brett



On Thu, Sep 8, 2011 at 8:38 PM, Brett Hemes <bre...@gm...> wrote:

> I have uninstalled networkmanager and the other couple of packages that
> depend on it.  Withou doing this the changes made with iwconfig never get
> applied.
>
> On Sep 8, 2011 3:49 PM, "Neil MacMunn" <ne...@gu...> wrote:
> >
> > Were you previously using a desktop image? You might have to kill
> > network manager to manually configure your wireless connection.
> >
> > -
> > Neil
> >
> >
> > On Wed, Sep 7, 2011 at 5:29 PM, Brett Hemes <bre...@gm...>
> wrote:
> > > Hello,
> > > I have recently flashed my overo fire with the March 25 image from the
> > > stable images and am having a bit of trouble with the wifi.
> > > Heres what I can do:
> > > - scan with "iwlist scan": I can see my access point (but not EVERY
> time;
> > > only three or so seem to show up every scan and sometimes mine is not
> on the
> > > list)
> > > - host an ad-hoc network reliably:  I can establish an ad-hoc network
> and
> > > connect to the gumstix via my laptop and ping times, signal strength,
> and
> > > reliability are awesome...
> > > Here is what I can't do:
> > > - connect to my router...
> > > I have tried every combination of /etc/network/interface configurations
> as
> > > well as manually trying to set things with ifconfig and iwconfig but
> the
> > > link never comes up.  I can get the essid, key, mode, and ip set but
> the
> > > link is always "NOT READY" as reported by libertas.
> > > Also, I repeatedly get the following error when I try to bring the
> > > connection up:
> > > [snip]
> > > libertas: assoc: bss (null) not in scan results
> > > ADDRCONF(NETDEV_UP): wlan0: link is not ready
> > > [snip]
> > >
> > > This is a bit discouraging being that I have gotten wifi to work in the
> past
> > > and can scan and establish ad-hoc networks.  When I get this working I
> am
> > > going to devote my time to experimenting with ROS for my application
> but I
> > > need to be able to connect to a router (WEP encryption preferable).
> > > Also, as an aside (maybe unrelated) I was able to connect before I
> moved (to
> > > the apartment next door) with the older image but haven't had any luck
> in my
> > > new apartment...
> > > I really don't know what happened / is happening.
> > > Thanks,
> > > Brett
> > >
> > >
> > >
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> desktops
> > provide companies an easier-to-deploy, easier-to-manage and more
> affordable
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