iwl3945 not able to associate kernel 2.6.27-7 ap channel 13

[Daniel Dekovic]

Binary package hint: linux-backports-modules-2.6.27-7-generic

I'm running ubuntu linux 8.10 on my msi ex700 laptop with 2.6.27-7 and 2.6.24-21 kernel. I'm using iwl3945 driver. I noticed that after upgrade my network didn't worked at all, but after I installed linux-backports-modules-2.6.27-7-generic package everything was fine again till I cahnged channel from 11 to 13 on my ap. When I did that I got following error:

Nov 3 21:32:17 heroina NetworkManager: <info> Activation (wlan0) starting connection 'Auto default'
Nov 3 21:32:17 heroina NetworkManager: <info> (wlan0): device state change: 3 -> 4
Nov 3 21:32:17 heroina NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
Nov 3 21:32:17 heroina NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
Nov 3 21:32:17 heroina NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
Nov 3 21:32:17 heroina NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
Nov 3 21:32:17 heroina NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
Nov 3 21:32:17 heroina NetworkManager: <info> (wlan0): device state change: 4 -> 5
Nov 3 21:32:17 heroina NetworkManager: <info> Activation (wlan0/wireless): connection 'Auto default' requires no security. No secrets needed.
Nov 3 21:32:17 heroina NetworkManager: <info> Config: added 'ssid' value 'default'
Nov 3 21:32:17 heroina NetworkManager: <info> Config: added 'scan_ssid' value '1'
Nov 3 21:32:17 heroina NetworkManager: <info> Config: added 'key_mgmt' value 'NONE'
Nov 3 21:32:17 heroina NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Nov 3 21:32:17 heroina NetworkManager: <info> (wlan0): supplicant connection state change: 2 -> 0
Nov 3 21:32:17 heroina NetworkManager: <info> Config: set interface ap_scan to 1
Nov 3 21:32:20 heroina NetworkManager: <info> (wlan0): supplicant connection state change: 0 > 2
Nov 3 21:32:32 heroina NetworkManager: <info> wlan0: link timed out.
Nov 3 21:32:42 heroina NetworkManager: <info> Activation (wlan0/wireless): association took too long, failing activation.
Nov 3 21:32:42 heroina NetworkManager: <info> (wlan0): device state change: 5 -> 9
Nov 3 21:32:42 heroina NetworkManager: <info> Activation (wlan0) failed for access point (default)
Nov 3 21:32:42 heroina NetworkManager: <info> Marking connection 'Auto default' invalid.
Nov 3 21:32:42 heroina NetworkManager: <info> Activation (wlan0) failed.
Nov 3 21:32:42 heroina NetworkManager: <info> (wlan0): device state change: 9 -> 3
Nov 3 21:32:42 heroina NetworkManager: <info> (wlan0): deactivating device (reason: 0).

As I try manually to bring my network up I noticed that I don't receive any dhcp offers from my ap although I should. This is only happening when I switch my ap channel from 11 to 13 on 2.6.27-7 kernel. On 2.6.24-21 everything is working fine. Wireless is working on 2.6.27-7 kernel but only if I'm not using channel 13.

[Leann Ogasawara (leannogasawara)]

Hi Daniel,

This actually looks to be a duplicate of bug 288401 which the kernel team is already aware of. The workaround mentioned in bug 288401 is to add the following to /etc/modprobe.d/options:

options cfg80211 ieee80211_regdom=EU

I'll go ahead and mark this a duplicate of that report. Please continue to track this issue there. Thanks.