GNOME Bugzilla – Bug 618264
Wireless LAN disconnects frequently # Chipset Intel 3945ABG @ AP with WPA
Last modified: 2010-05-22 18:40:41 UTC
In Ubuntu Karmic Ungolianth reported: Error occurs at Karmic Koala Alpha5: Everything's working fine, when using the WEP-Encryption. But when using a WPA-Encryption, the device looses connection after about 10-15 seconds. In that short time I'm able to use the Internet... -------------------------------------------------------- $ lspci |grep -i net 02:08.0 Ethernet controller: Intel Corporation 82562ET/EZ/GT/GZ - PRO/100 VE (LOM) Ethernet Controller Mobile (rev 01) 10:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02) --------------------------------------------------------- If more data is needed contact me. Launchpad ref: https://bugs.edge.launchpad.net/ubuntu/+source/network-manager/+bug/425455
Can you grab the output of 'dmesg'? There should be a number of items related to 'iwl3945' or 'iwlagn' in there that could help. Also, some additional debugging tips are here: http://live.gnome.org/NetworkManager/Debugging in the "Debugging WiFi Connections" section; the supplicant log can be very useful in determining the problem. The log bits linked in that Launchpad bug aren't quite enough to determine the issue.
Created attachment 160919 [details] wpa_supplicant debug log In attachment there is a log from wpa_supplicant in debug mode (ran with "-dddt").
dmesg | grep -e iwl3945 -e iwlagn [ 11.186223] iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, 1.2.26ks [ 11.186226] iwl3945: Copyright(c) 2003-2009 Intel Corporation [ 11.186334] iwl3945 0000:05:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19 [ 11.186349] iwl3945 0000:05:00.0: setting latency timer to 64 [ 11.242577] iwl3945 0000:05:00.0: Tunable channels: 11 802.11bg, 13 802.11a channels [ 11.242580] iwl3945 0000:05:00.0: Detected Intel Wireless WiFi Link 3945ABG [ 11.242732] iwl3945 0000:05:00.0: irq 28 for MSI/MSI-X [ 16.057115] iwl3945 0000:05:00.0: firmware: requesting iwlwifi-3945-2.ucode [ 16.449238] iwl3945 0000:05:00.0: loaded firmware version 15.32.2.9
Unfortunately this appears to be a driver error. It simply isn't able to connect to the AP using the settings you've given it. The logs show a lot of half-completed connections that then fail because the driver sends the "disconnect" event. I think at this point you shoudl file a bug in your distributions' bugzilla against the kernel with these logs and follow it up there. They'll likely ask you to enable debug logging of the driver so that they can see why the driver is failing to connect to the AP.
(In reply to comment #4) > Unfortunately this appears to be a driver error. It simply isn't able to > connect to the AP using the settings you've given it. The logs show a lot of > half-completed connections that then fail because the driver sends the > "disconnect" event. I think at this point you shoudl file a bug in your > distributions' bugzilla against the kernel with these logs and follow it up > there. They'll likely ask you to enable debug logging of the driver so that > they can see why the driver is failing to connect to the AP. Hmmm.. it works with Wicd Network Manager.