Discussion:
Intel 7260 (iwm) connects to 280.11ac AP only at 1M in 802.11g mode
Lev Serebryakov
2021-04-16 11:40:20 UTC
Permalink
I have UniFi AP AC Lite which works in 802.11ac mode.

I've installed FreeBSD CURRENT on laptop with Intel 7260 WiFi adapter. It works with `iwm` driver and appropriate firmware, but it could associate with AP only at 1M speed:

# ifconfig wlan0
wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
ether 7c:7a:91:98:80:46
inet6 fe80::7e7a:91ff:fe98:8046%wlan0 prefixlen 64 scopeid 0x3
inet6 2001:470:923f:3:7e7a:91ff:fe98:8046 prefixlen 64 autoconf
inet 192.168.136.129 netmask 0xffffff00 broadcast 192.168.136.255
groups: wlan
ssid home.serebryakov.spb.ru channel 6 (2437 MHz 11g) bssid f0:9f:c2:f4:3d:b7
regdomain NONE country RU authmode WPA2/802.11i privacy ON
deftxkey UNDEF AES-CCM 2:128-bit AES-CCM 3:128-bit txpower 30 bmiss 10
scanvalid 60 protmode CTS wme roaming MANUAL
parent interface: iwm0
media: IEEE 802.11 Wireless Ethernet DS/1Mbps mode 11g
status: associated
nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>

# ifconfig wlan0 list sta
ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG
f0:9f:c2:f4:3d:b7 1 6 1M 44.0 0 44204 19328 EPS AQEU BSSLOAD HTCAP WME ATH RSN (rssi 0.0:0.0:0.0:0.0 nf 0:0:0:0)
#

Other devices (mobile phones, two laptops with Windows 10) connect with 802.11n speeds at same physical spot.

I understand, that 7260 is only 802.11g-capable device, but 1M is way too slow even for 802.11g :)
--
// Lev Serebryakov
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