Ubuntu
network-manager package

iwl3945 cannot find or connect to EU channels

Bug #272407 reported by Andrew Hutchings
10
Affects Status Importance Assigned to Milestone
network-manager (Ubuntu)
Confirmed
Low
Unassigned

Bug Description

Binary package hint: network-manager

Release: Intrepid Alpha 6 i386 live CD (no updates)
Package (suspected): network-manager 0.7~~svn20080908t183521+eni0
Hardware: Compaq 6720s Centrino Core2Duo laptop and Gateway MX6932b Centrino Core Duo laptop. Both using Intel 3945ABG wifi chips.
Router: Linksys WRT54GS

Expected: My WPA network to be seen or at least able to connect to

Actual: My WPA network is not listed and cannot force it to connect. Neighboring WEP networks seen are fine.

Both these laptops work fine in Hardy our of the box. Using the Intrepid live CD neither can see my WPA encrypted network but can see neighboring WEP encrypted networks fine. When forcing via. "Connect to Other Wireless Network..." it repeatedly tries to connect and then asks me for the WPA password. Never actually full connecting.

Edit:
The problem is the EU channels are not enabled by default. They have to be enabled with the following in /etc/modprobe.d/options:

options cfg80211 ieee80211_regdom=EU

Bug summary changed appropriately.

Is there any way this option can be set (some kind of country selection option?) in a user friendly way upon Desktop CD boot?

See original description
Martin Nowack (martin-nowack)
Changed in network-manager:
status: New → Confirmed
Revision history for this message
Chris Coulson (chrisccoulson) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately we can't start working on it yet, because your bug report didn't include enough information.

Please include the information requested at https://wiki.ubuntu.com/DebuggingNetworkManager. If you have trouble, do not hesitate to ask for more assistance. Thanks in advance.

Changed in network-manager:
importance: Undecided → Medium
status: Confirmed → Incomplete
Revision history for this message
Martin Nowack (martin-nowack) wrote :

Which channel does your network use?

I used channel 13 (that worked in hardy) but it seams to be that it doesn't work in intrepid, because it is a passive channel.
Try 'iwlist channel' and look if at least your channel is visible for your card.
After changing the router to a visible channel it worked without a problem.

Revision history for this message
hendrikwout (hendrikwout) wrote :

I'm living in the EU (not US where it is forbidden), so there are a lot of acces points on those channels. Is there a way to make it an active channel? I searched for it but can't find it.

Revision history for this message
hendrikwout (hendrikwout) wrote :

I found, finally. I had to add to /etc/modprobe.d/options:

options cfg80211 ieee80211_regdom=EU

And I can connect, jippie.

I still consider it as a bug. this option should be enabled by default for all eu-country locale settings.

Revision history for this message
Andrew Hutchings (linuxjedi) wrote :

hendrikwout is correct.

My router is on channel 13 (I'm in the UK). My neighbours use most other channels in this area.

Adding those options to modprobe fixes the problem.

LinuxJedi (andrew-linuxjedi-merged)
description: updated
Revision history for this message
Andrew Hutchings (linuxjedi) wrote :

Note: This appears to be similar to bug #205095

Revision history for this message
hseffler (hseffler) wrote :

Why is this bug marked as incomplete? All the information needed seems to be there....

Revision history for this message
Chris Coulson (chrisccoulson) wrote :

Setting to confirmed for now. I'm not sure that the bug should be against NM though

Changed in network-manager:
importance: Medium → Low
status: Incomplete → Confirmed
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