Wireless (WPA) cannot connect after upgrade to Lucid Lynx

[Jakob Schiøtz]

Binary package hint: network-manager

After upgrading to Lucid Lynx (at work, using wired network) I can no longer connect to the WPA encrypted network at home. After a while, it comes out and asks for the password, clicking "Show Password" confirms that it is indeed still correct. It looks like the connection times out, I will attach the log file daemon.log, the relevant part is Mar 3 around 21:00

The kernel module iwl3945 is loaded.

/Jakob

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: network-manager 0.8-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
Architecture: amd64
CRDA: Error: [Errno 2] No such file or directory
Date: Mon May 3 21:10:08 2010
ExecutablePath: /usr/sbin/NetworkManager
Gconf:

IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
IpRoute:
 192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.190 metric 1
 169.254.0.0/16 dev eth0 scope link metric 1000
 default via 192.168.0.1 dev eth0 proto static
Keyfiles: Error: [Errno 2] No such file or directory
ProcEnviron: PATH=(custom, no user)
SourcePackage: network-manager

[Jakob Schiøtz (schiotz)]

I just learned about nm-tool, here is the output in case it helps:

NetworkManager Tool

State: connected

- Device: eth0 [Auto eth0] ----------------------------------------------------
  Type: Wired
  Driver: e1000e
  State: connected
  Default: yes
  HW Address: 00:16:41:AE:EE:47

  Capabilities:
    Carrier Detect: yes
    Speed: 1000 Mb/s

  Wired Properties
    Carrier: on

  IPv4 Settings:
    Address: 192.168.0.190
    Prefix: 24 (255.255.255.0)
    Gateway: 192.168.0.1

    DNS: 192.168.0.1

- Device: wlan0 ----------------------------------------------------------------
  Type: 802.11 WiFi
  Driver: iwl3945
  State: disconnected
  Default: no
  HW Address: 00:19:D2:05:D2:44

  Capabilities:

  Wireless Properties
    WEP Encryption: yes
    WPA Encryption: yes
    WPA2 Encryption: yes

  Wireless Access Points
    dlinkfwand: Infra, 00:24:01:F3:46:CA, Freq 2412 MHz, Rate 54 Mb/s, Strength 34 WPA WPA2
    AsgardWPA: Infra, 00:1E:58:29:63:3B, Freq 2437 MHz, Rate 54 Mb/s, Strength 100 WPA WPA2
    Internet: Infra, 00:0F:CC:B5:BF:08, Freq 2472 MHz, Rate 54 Mb/s, Strength 32 WPA WPA2

[Jakob Schiøtz (schiotz)]

This problem appears to be related to the kernel. After installing the kernel linux-image-2.6.31-21-generic from karmic-updates, my wireless connection is again rock stable. Of course installing a kernel from an old version of Ubuntu is kind of worrying, but a part from a broken boot splash screen I have seen no ill effects.

Correction to the problem description: It is not impossible to connect to the network, but it requires many retries. After 5-10 minutes of retries, it usually connects, but then disconnects after roughly an hour.

I have previously tried to configure WPA manually, i.e. after uninstalling network-manager. The problem remains. I have also tried to downgrade wpasupplicant to the version from Karmic. The problem remains. But after undoing these experiments, and downgrading the kernel, the wireless connects almost immediately and does not disconnect.

[Jakob Schiøtz (schiotz)]

Marking as a duplicate of 569841, although the latter is (still) incorrectly assigned to wpa_supplicant and not the kernel.