On Wed, Mar 5, 2008 at 2:15 PM, Helge Hafting <helge.hafting@xxxxxxxxxxxxx> wrote: > I recently wrote about my iwl3945 problems - I usually > have to try 20-50 times before I can use a wep-encrypted access point. > Once the link goes up - no more problems. But getting the first > connection takes time. > > Yesterday something weird happened. > I run the same iwconfig command over and over. Then a wild guess: > Perhaps the driver or linux is clever enough to see that I > just set the same essid and key as last time, and optimize the > operation away completely? I have no idea if this actually happens, > but I changed the essid (added a few garbage characters) > in order to force a difference. I was about to run iwconfig again > with the correct essid, when I noticed that the link was up! > > An "iwconfig" without parameters showed that the PC indeed > had associated to the usual access point, and the essid was wrong one > indeed. > I then ran "dhclient", got an IP address, and used my home network > for a few hours. No problems, but the essid was wrong all the time. > > I thought this ought to be impossible - so I can only guess that > the essid is stored in several places - one place used by "iwconfig" > to display the current essid, and somewhere else used to program > the radio. And the latter place is not necessarily updated when > "iwconfig essid <something>" is run - and therefore the link > worked anyway. This could possibly explain why things fail > so much - perhaps the essid is set correctly only occationally? > > Kernel: 2.6.25-rc3, SMP 64-bit. Other sw from debian testing. > > Helge Hafting I've seen some problems with avahi-daemon intercepting wrong SSID during association I didn't root caused the problem yet. I'm using Fedora 8 now. When I've commented the auto selection out (IEEE80211_STA_AUTO_SSID_SEL) it performed better Yet I also didin't root caused the problem yet. > > -- > To unsubscribe from this list: send the line "unsubscribe linux-wireless" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
