In short: Does anyone have a known working overo image that does not have wifi time out? I really feel dirty running a "ping -i 60 google.com" in the background just to keep wifi working.

Specifically this image has the following property:
  1. Does not turn off wifi after 2-3 minutes of inactivity.
I've tried three images, so far. The latest development image (console) from the gumstix website (Oct 2011), (from here: http://cumulus.gumstix.org/images/angstrom/developer/2011-10-17-1015/), the stock image (Oct. 2010), and an older 'known' working image that I found online from a blogger who had the same problem but he said that his image fixed the problem (September 2010).

Blaine


On Wed, Dec 14, 2011 at 12:52 PM, Blaine <frikker@gmail.com> wrote:
Kishan,
  this happens regardless of the /etc/network/interfaces configuration. From what I understand that file only specifies what the default behavior of the card is. But I do have it set to the default recommended configuration for an open access point.

We plan on using the gumstix in a data streaming situation so having the wifi go off for 2-3 seconds is unacceptable anyway :( Either way, it doesn't come back on after 2-3 seconds. It stays off.

As of now I have a ping script running in the background every 30 seconds. A huge hack but that's all I can figure out for now.

Thanks for your help. I'm not sure what else to try.
Blaine



On Wed, Dec 14, 2011 at 1:48 AM, Kishan Kant <kkant3.14@gmail.com> wrote:

Power Management is "on" for me too, so that certainly isn't the problem.

And I too get the message "Calling CRDA to update world regulatory domain". When I get this message, I think the overo wi-fi goes down briefly because when I try to ping it immediately, I can't. But then within 2-3 seconds the Wi-Fi is up again; I get ping responses from the gumstix.

I'm not sure what the problem is. Is your /etc/network/interfaces set up problem?


-kk



On Dec 13, 2011, at 5:32 PM, Blaine wrote:

> I've noticed that "power management" is now ON with this new build. I tried to disable it, got a bad message:
> root@overo:~# iwconfig wlan0 power off
> Error for wireless request "Set Power Management" (8B2C) :
>     SET failed on device wlan0 ; Operation not supported.
>
> Crap.
> Blaine
>
>
> On Tue, Dec 13, 2011 at 5:23 PM, Blaine <frikker@gmail.com> wrote:
> This appeared to have worked at first, because the wifi stayed on for more than 2-3 minutes... but then this flashed on my console:
>
> cfg80211: Calling CRDA for country: US
>
> and then the blue wifi LED turned off. Still have IP, iwconfig says not connected to any access point.
>
> any thoughts? the CRDA message is new to me.
>
> Using the development image:
>  Linux overo 3.0.0 #1 Tue Oct 11 11:37:21 PDT 2011 armv7l GNU/Linux
>
> Blaine
>
>
>
> On Tue, Dec 13, 2011 at 4:34 PM, Blaine <frikker@gmail.com> wrote:
> Thank you kishan. I'm currently using the stock image that came on the overo, built October 20 2010. I'll try a new image and see what it does. Thanks!
> Blaine
>
>
>
> On Tue, Dec 13, 2011 at 4:30 PM, Kishan Kant <kkant3.14@gmail.com> wrote:
> Are you using one of the pre-built development images (if yes, which one) or your own?
>
> I had WiFi issues when I was using the factory pre-built development image. But when I used the latest development pre-built image, the WiFi worked fine.
>
> On Dec 12, 2011, at 6:43 PM, Blaine wrote:
>
> > Hi everyone. I solved the "why won't the ESSID" connect due to "user error". One of the letters in our ESSID was capitalized... hah.
> >
> > Still no solution on why wifi appears turns off after 3 minutes. For now I have to ping in the background.
> >
> > Blaine
> >
> >
> > On Mon, Dec 12, 2011 at 5:20 PM, Blaine <frikker@gmail.com> wrote:
> > Actually I do have one other incredibly frustrating problem. The following works as defined by "the blue wifi LED stays on":
> > iwconfig wlan0 essid any
> >
> > But half the time it picks the wrong network. I can't force it to pick our network for the life of me
> > iwconfig wlan0 essid myhomenet
> >
> > never works. Flashes the blue LED but then it ends up staying off.
> >
> > When the first command randomly picks our network, everything works fine (until it auto-powers off). But it is really frustrating if it picks the wrong network, it's like there is nothing i can do to get it to work correctly
> >
> > (by the way I'm using the wiki wifi tutorial, disabled bluetooth, uninstalled the network manager.
> > Linux overo 2.6.34 #1 Wed Oct 20 10:22:48 PDT 2010 armv7l GNU/Linux
> >
> > Blaine
> >
> >
> >
> > On Mon, Dec 12, 2011 at 5:15 PM, Blaine <frikker@gmail.com> wrote:
> > Hi everyone. I'll keep it quick. Unlike most overo issues, when my wifi is working it works fine (I think). I can ping google and for now that's all that matters.
> >
> > I can see the little blue LED on my board. When I connect to an access point successfully, it flashes and then stays on. After 2-3 minutes it turns off, and I have no network connectivity even though it think I do (with iwconfig, etc.). No dmesg statement, nothin'. I have to bring it down, bring it back up, and do the "iwconfig wlan0 essid on" to get it back up. Light comes back on and I'm good to go.
> >
> > If I hold a ping command like "ping google.com" there are no problems and it will stay on continuously until 2-3 minutes after stopping the ping.
> >
> > I remember that the LCD display has a power saving mode that we never figured out how to disable. Is this related? All I want is stable wifi that doesn't turn off. I can't figure out what is causing this behavior. Suggestions are greatly appreciated.
> > Blaine
> >
> >
> > ------------------------------------------------------------------------------
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