iwn(4) problem

[matt]

On 10/25/11 12:37, Sergey A. Osokin wrote:
> Hi.
>
> I have ThinkPad X1 laptop with iwn(4) network card.
>
> %uname -spr
> FreeBSD 9.0-RC1 amd64
>
> % dmesg 
> iwn0: <Intel(R) Centrino(R) Wireless-N 1000> mem 0xf2500000-0xf2501fff irq 17 at device 0.0 on pci3
>
> >From time to time it works well, i.e. on my job, but currently it doesn't work
> with my small home WiFi/ADSL router D-Link G-604T.
> Also, in my home network I have two different devices: Galaxy Tab and MacBook Pro 15" and
> these devices are works well, but ThinkPad with FreeBSD 9.0-RC1 can't connect to WiFi router :-(
>
> Also, I tried to use Ubuntu Linux 11.10 LiveCD and the laptop works well with
> home WiFi network.
>
> $ ifconfig iwn0
> iwn0: flags=8843<UP,BROADCAST,RUNNING,SIMLPLEX,MULTICAST> metric 0 mtu 2290
> 	ether 8c:a9:82:bd:41:a0
> 	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> 	media: IEEE 802.11 Wireless Ethernet autoselect mode 11g
> 	status: associated
> $ ifconfig wlan0
> wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMLPLEX,MULTICAST> metric 0 mtu 1500
> 	ether 8c:a9:82:bd:41:a0
> 	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> 	media: IEEE 802.11 Wireless Ethernet autoselect (autoselect)
> 	status: no carrier
> 	ssid "" channel 5 (2432 Mhz 11g)
> 	country US authmode WPA privacy ON deftxkey UNDEF txpower 14 bmiss 10
> 	scanvalid 450 bgscan bgscanintvl 300 bgscanidle 250 roam:rssi 7
> 	roam:rate 5 protmode CTS wme roaming MANUAL bintval 200
>
> $ ifconfig wlan0 list scan
> ...
> ozznet	00:11:95:94:cb:b4    5  54M -73:-95 200 EPSB WPA
>
> In /etc/wpa_supplicant.conf I have two network entries (for home and for job) with
> psk keys.
>
> $ more /etc/rc.conf
> ...
> wlans_iwn0="wlan0"
> ifconfig_wlan0="WPA DHCP"
>
> More information available upon request.
>
Run something like this (it's trying to flush routing table, down the
interface, and associate. Also, simpler wpa_supplicant.conf is better
than complex! Make sure psks are actually right :).

ifconfig wlan0 destroy
route flush
mv /etc/resolv.conf /etc/resolv.old
killall wpa_supplicant
killall dhclient
ifconfig wlan0 create wlandev iwn0
ifconfig wlan0 up
sleep 1
ifconfig wlan0 scan
wpa_supplicant -i wlan0 -c /etc/wpa_supplicant.conf -B
sleep 4
dhclient wlan0

I had the same card daily in FreeBSD since early 2010. Worked perfectly.
It makes me think it's probably not the card.
I actually had a script using dialog for various network configurations
(home, work) that would clear network configs and reconfigure the
machine for various roles.

Matt