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 <b>only</b> problem occurs in Ubuntu 9.10 Karmic.<div>
<br></div><div>What's the first step for debugging the stack?</div><br><div class="gmail_quote">On Fri, Nov 20, 2009 at 2:47 PM, Dan Williams <span dir="ltr"><<a href="mailto:dcbw@redhat.com">dcbw@redhat.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="im">On Fri, 2009-11-20 at 14:37 -0500, Bryan Moore wrote:<br>
> I think that's where my problem is a little different, since I use<br>
> neither network-manager nor wicd.<br>
<br>
</div>Then that points to either an AP issue or a driver issue. I'd first<br>
suspect the driver, but consumer-level APs are often pieces of junk that<br>
sometimes randomly fail as well.<br>
<br>
First try to reboot the AP. If that doesn't help, then try to downgrade<br>
your kernel if you still have an older one installed. That can help<br>
isolate driver issues.<br>
<br>
After that, well, you have to jump into debugging the kernel wireless<br>
stack, which isn't really that bad.<br>
<font color="#888888"><br>
Dan<br>
</font><div><div></div><div class="h5"><br>
> On Fri, Nov 20, 2009 at 2:36 PM, Dan Williams <<a href="mailto:dcbw@redhat.com">dcbw@redhat.com</a>> wrote:<br>
> On Fri, 2009-11-20 at 05:25 -0500, Bryan Moore wrote:<br>
> > Thanks... I figured that was going to be the answer, but was<br>
> hoping<br>
> > someone would just write-back "oh, it's this..."<br>
> > :-(<br>
><br>
><br>
> It's almost never that simple :)<br>
><br>
> > Here's one I started in UbuntuForums, here's my Launchpad<br>
> bug, here's<br>
> > one of the others, and I've attached some of command outputs<br>
> specific<br>
> > to my system.<br>
><br>
><br>
> The Syslog.txt in that first Launchpad bug shows a lot of:<br>
><br>
> Jul 18 17:17:28 molly kernel: [25847.724098] wlan0: no probe<br>
> response from AP 00:13:d3:81:ac:d6 - disassociating<br>
><br>
> It looks from that bug report that NM is working correctly,<br>
> but often<br>
> the driver simply disconnects you because the AP is not<br>
> responding to<br>
> probe requests, or the driver has a bug which causes it to<br>
> miss the<br>
> probe responses.<br>
><br>
> Dan<br>
><br>
><br>
> > Thanks, again.<br>
> ><br>
> ><br>
> > On Thu, Nov 19, 2009 at 6:12 PM, Jouni Malinen <<a href="mailto:j@w1.fi">j@w1.fi</a>><br>
> wrote:<br>
> ><br>
> > On Thu, Nov 19, 2009 at 02:52:13PM -0500, Bryan<br>
> Moore wrote:<br>
> > > There are *many* questions regarding some basic<br>
> networking<br>
> > problems in<br>
> > > Ubuntu Karmic Koala 9.10 and the forum<br>
> > (<a href="http://www.ubuntuforum.org/" target="_blank">http://www.ubuntuforum.org/</a>)<br>
> > > provided me little direction in this single case,<br>
> so I<br>
> > thought I'd go to the<br>
> > > source.<br>
> > ><br>
> > > It would *seem* there is a problem with<br>
> wpa_supplicant in<br>
> > Ubuntu right now;<br>
> > > some, me being one, are having *serious<br>
> *networking issues<br>
> > when using WPA2.<br>
> > > There are some threads discussing it and a bug has<br>
> been<br>
> > filed in Launchpad,<br>
> > > but most focus on a Network-Manager issue rather<br>
> than<br>
> > wpa_supplicant. Some<br>
> > > have also reported the issue either greatly<br>
> diminishes or<br>
> > disappears<br>
> > > completely when switching from WPA2 to WPA.<br>
> > ><br>
> > > Could you advise me where to begin my little<br>
> investigation?<br>
> ><br>
> ><br>
> > You could start by providing some more details of<br>
> the issue or<br>
> > a pointer<br>
> > to such description (like a full URL to a thread<br>
> discussing<br>
> > this or a<br>
> > specific bug in Launchpad). As far as this mailing<br>
> list is<br>
> > concerned,<br>
> > getting a verbose debug log from wpa_supplicant<br>
> (both success<br>
> > and<br>
> > failure case) and description of which driver you<br>
> are using<br>
> > would also<br>
> > be quite helpful.<br>
> ><br>
> > --<br>
> > Jouni Malinen<br>
> PGP<br>
> > id EFC895FA<br>
> > _______________________________________________<br>
> > HostAP mailing list<br>
> > <a href="mailto:HostAP@lists.shmoo.com">HostAP@lists.shmoo.com</a><br>
> > <a href="http://lists.shmoo.com/mailman/listinfo/hostap" target="_blank">http://lists.shmoo.com/mailman/listinfo/hostap</a><br>
> ><br>
> > _______________________________________________<br>
> > HostAP mailing list<br>
> > <a href="mailto:HostAP@lists.shmoo.com">HostAP@lists.shmoo.com</a><br>
> > <a href="http://lists.shmoo.com/mailman/listinfo/hostap" target="_blank">http://lists.shmoo.com/mailman/listinfo/hostap</a><br>
><br>
><br>
><br>
<br>
</div></div></blockquote></div><br>