(iwlagn) cannot connect to [NONE]

[MagnusPI]

Binary package hint: network-manager

I upgraded from 9.04 to 9.10 and my wireless connection stopped working.

Disabling NetworkManager the connection works again.

My wifi connection is not protected but it filters MACs.

The problem is in the way NetworkManager uses wpa_supplicant.

I loaded iwlagn with debug=65535 and this is the output of /var/log/syslog

Nov 6 20:42:49 Mobiligor4 kernel: [ 36.193582] wlan0: authenticate with AP 00:18:f8:xx:xx:xx
Nov 6 20:42:49 Mobiligor4 kernel: [ 36.195540] wlan0: authenticated
Nov 6 20:42:49 Mobiligor4 kernel: [ 36.195544] wlan0: associate with AP 00:18:f8:xx:xx:xx
Nov 6 20:42:49 Mobiligor4 kernel: [ 36.197781] wlan0: RX AssocResp from 00:18:f8:xx:xx:xx (capab=0x401 status=0 aid=2)
Nov 6 20:42:49 Mobiligor4 kernel: [ 36.197786] wlan0: associated
Nov 6 20:42:49 Mobiligor4 wpa_supplicant[741]: No network configuration found for the current AP
Nov 6 20:42:49 Mobiligor4 kernel: [ 36.218543] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
Nov 6 20:42:49 Mobiligor4 kernel: [ 36.218824] wlan0: disassociating by local choice (reason=3)
Nov 6 20:42:49 Mobiligor4 wpa_supplicant[741]: CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys

I must add that I have a /etc/wpa_supplicant.conf with one network of type WPA-PSK

It took some time to pin down the problem because
1) if the interface wlan0 was down and I configured the essid for wlan0 manually with iwconfig the essid was accepted (as it could be verified by iwconfig) but the essid was lost as soon as I brought the interface up

2) if the interface wlan0 was up and I tried to configure its essid with iwconfig wlan0 simply did not accept the essid and iwconfig showed no essid assigned to wlan0.

ProblemType: Bug
Architecture: i386
CRDA: Error: [Errno 2] No such file or directory
Date: Sat Nov 7 11:45:56 2009
DistroRelease: Ubuntu 9.10
Gconf:

IpRoute:
 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.6
 169.254.0.0/16 dev wlan0 scope link metric 1000
 default via 192.168.1.1 dev wlan0 metric 100
Package: network-manager 0.8~a~git.20091013t193206.679d548-0ubuntu1
ProcEnviron:
 LANGUAGE=
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: network-manager
Uname: Linux 2.6.31-14-generic i686
WpaSupplicantLog:

XsessionErrors:
 (polkit-gnome-authentication-agent-1:2210): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (firefox:2187): Gdk-WARNING **: XID collision, trouble ahead

[Maarten Bezemer (veger)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. There have been many changes in Ubuntu since that time you reported the bug and your problem may have been fixed with some of the updates. It would help us a lot if you could test it on a currently supported Ubuntu version. When you test it and it is still an issue, kindly upload the updated logs by running apport-collect 477337 and any other logs that are relevant for this particular issue.

[Thomas Hood (jdthood)]

Does "iwconfig wlan0 power off" fix the problem (until reboot)?