Re: Can't seem to use 5GHz APs with Intel wireless

On Fri, Jun 1, 2018 at 2:10 AM, Dhananjay Balan <mail_at_dbalan.in> wrote:

> Hi,
>
> (Apologies if this is the wrong list, please point me at the right one if
> you know)
>
> I run 12-CURRENT (r334442) on a Thinkpad X230. This machine has an Intel
> Centrino Advanced N 6205. But freebsd only uses in in 11g mode. When I
> try to scan, it won't even display 5GHz aps.
>
>
> wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
> 1500
>         ether a4:4e:31:02:70:3c
>         inet 192.168.1.108 netmask 0xffff0000 broadcast 192.168.255.255
>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>         media: IEEE 802.11 Wireless Ethernet MCS mode 11ng
>         status: associated
>         ssid SSID channel 7 (2442 MHz 11g ht/20) bssid bc:8a:e8:0b:a9:3f
>         regdomain FCC4 country DE authmode WPA2/802.11i privacy ON
>         deftxkey UNDEF AES-CCM 2:128-bit txpower 30 bmiss 10 scanvalid 60
>         protmode CTS ampdulimit 32k ampdudensity 16 -amsdutx amsdurx
> shortgi
>         -stbc -ldpc wme roaming MANUAL
>         groups: wlan
>
>
>
> From reading man pages, I can see that iwn(4) supports 11n. Is it
> really supprted?  What can I do to enable 11n?
>
>
> Here are my configs
>
> /etc/rc.conf
> wlans_iwn0="wlan0"
> ifconfig_wlan0="ssid SSID WPA SYNCDHCP"
>
>
> /etc/wpa_supplicant.conf
> ctrl_interface=/var/run/wpa_supplicant
> eapol_version=2
> ap_scan=1
> fast_reauth=1
>
> network={
> ssid="SSID"
> scan_ssid=0
> psk="PSK"
> priority=5
> }
>
>
> /boot/loader.conf
> # wifi
> if_iwn_load="YES"
> iwn1000fw_load="YES"
> iwn100fw_load="YES"
> iwn105fw_load="YES"
> iwn135fw_load="YES"
> iwn2000fw_load="YES"
> iwn2030fw_load="YES"
> iwn4965fw_load="YES"
> iwn5000fw_load="YES"
> iwn5150fw_load="YES"
> iwn6000fw_load="YES"
> iwn6000g2afw_load="YES"
> iwn6000g2bfw_load="YES"
> iwn6050fw_load="YES"
> ___________________
>

First, if you are using GENERIC, the driver and firmware are either in the
kernel (driver) or auto-loaded. Yo should not have anything about this in
your loader.conf.

As far as other configuration goes, rc.local should not need (or want) the
SSID. That is why it is in wpa_supplicant.conf. All global wpa_supplicant
global definition is not needed except for eapol_version=2 as 1 is default.
Normally teh default works, but some APs insist on V2. Still, it should not
hurt to define everything.

I do find the iwn driver to be pretty poor and sometimes a bit unstable,
but it does work. I have 11n and 54 MHz working. what do you see with
'ifconfig wlan0 list aps'? If 54M is available, it should show up.
--
Kevin Oberman, Part time kid herder and retired Network Engineer
E-mail: rkoberman_at_gmail.com
PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683