WPA2 Issues in Ubuntu Karmic 9.10

[Bryan Moore]

I've already ruled-out the AP because I have several other computers running
on it with no issues, from straight Debian to MintLinux to Ubuntu to Windows
XP and varying many different kernels. My *only* problem occurs in Ubuntu
9.10 Karmic.

What's the first step for debugging the stack?

On Fri, Nov 20, 2009 at 2:47 PM, Dan Williams <dcbw at redhat.com> wrote:

> On Fri, 2009-11-20 at 14:37 -0500, Bryan Moore wrote:
> > I think that's where my problem is a little different, since I use
> > neither network-manager nor wicd.
>
> Then that points to either an AP issue or a driver issue.  I'd first
> suspect the driver, but consumer-level APs are often pieces of junk that
> sometimes randomly fail as well.
>
> First try to reboot the AP.  If that doesn't help, then try to downgrade
> your kernel if you still have an older one installed.  That can help
> isolate driver issues.
>
> After that, well, you have to jump into debugging the kernel wireless
> stack, which isn't really that bad.
>
> Dan
>
> > On Fri, Nov 20, 2009 at 2:36 PM, Dan Williams <dcbw at redhat.com> wrote:
> >         On Fri, 2009-11-20 at 05:25 -0500, Bryan Moore wrote:
> >         > Thanks... I figured that was going to be the answer, but was
> >         hoping
> >         > someone would just write-back "oh, it's this..."
> >         > :-(
> >
> >
> >         It's almost never that simple :)
> >
> >         > Here's one I started in UbuntuForums, here's my Launchpad
> >         bug, here's
> >         > one of the others, and I've attached some of command outputs
> >         specific
> >         > to my system.
> >
> >
> >         The Syslog.txt in that first Launchpad bug shows a lot of:
> >
> >         Jul 18 17:17:28 molly kernel: [25847.724098] wlan0: no probe
> >         response from AP 00:13:d3:81:ac:d6 - disassociating
> >
> >         It looks from that bug report that NM is working correctly,
> >         but often
> >         the driver simply disconnects you because the AP is not
> >         responding to
> >         probe requests, or the driver has a bug which causes it to
> >         miss the
> >         probe responses.
> >
> >         Dan
> >
> >
> >         > Thanks, again.
> >         >
> >         >
> >         > On Thu, Nov 19, 2009 at 6:12 PM, Jouni Malinen <j at w1.fi>
> >         wrote:
> >         >
> >         >         On Thu, Nov 19, 2009 at 02:52:13PM -0500, Bryan
> >         Moore wrote:
> >         >         > There are *many* questions regarding some basic
> >         networking
> >         >         problems in
> >         >         > Ubuntu Karmic Koala 9.10 and the forum
> >         >         (http://www.ubuntuforum.org/)
> >         >         > provided me little direction in this single case,
> >         so I
> >         >         thought I'd go to the
> >         >         > source.
> >         >         >
> >         >         > It would *seem* there is a problem with
> >         wpa_supplicant in
> >         >         Ubuntu right now;
> >         >         > some, me being one, are having *serious
> >         *networking issues
> >         >         when using WPA2.
> >         >         > There are some threads discussing it and a bug has
> >         been
> >         >         filed in Launchpad,
> >         >         > but most focus on a Network-Manager issue rather
> >         than
> >         >         wpa_supplicant. Some
> >         >         > have also reported the issue either greatly
> >         diminishes or
> >         >         disappears
> >         >         > completely when switching from WPA2 to WPA.
> >         >         >
> >         >         > Could you advise me where to begin my little
> >         investigation?
> >         >
> >         >
> >         >         You could start by providing some more details of
> >         the issue or
> >         >         a pointer
> >         >         to such description (like a full URL to a thread
> >         discussing
> >         >         this or a
> >         >         specific bug in Launchpad). As far as this mailing
> >         list is
> >         >         concerned,
> >         >         getting a verbose debug log from wpa_supplicant
> >         (both success
> >         >         and
> >         >         failure case) and description of which driver you
> >         are using
> >         >         would also
> >         >         be quite helpful.
> >         >
> >         >         --
> >         >         Jouni Malinen
> >              PGP
> >         >         id EFC895FA
> >         >         _______________________________________________
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> >
> >
> >
>
>
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