Intel 8260 wireless is broken in FreeBSD-12.0-CURRENT-amd64-20170203-r313113

[JT Pennington]

iwm0: <Intel Dual Band Wireless AC 8260> mem 0xe1000000-0xe1001fff irq 17 at device 0.0 on pci2 

iwm0: hw rev 0x200, fw ver 16.242414.0, 




I'm using the iwm8000Cfw.ko driver 




I dont recall having this issue before January, but I've been jumping between laptops so much that maybe I didn't notice this before because this laptop normally is sitting in a docking station. When I noticed the issue, I thought it was due to me screwing around on my local TrueOS system. However after testing on the latest FreeBSD release, I have the same problems. The wireless device is detected, and is listed with ifconfig. I can scan with the device without issue, but I can't attach to any network (open or encrypted). Somewhat randomly when I try to connect with wpa_supplicant the entire interface dies and I have to restart the device. I have tested the machine (Lenovo x250) with Windows and two Linux distros (Slackware, ArchLinux) and the wireless works fine, so I know it's not a hardware issue. 




I'm a bit out of my depth here, but I'll read up in the docs about how to get a dump for you. 





[root at skynet] ~# sysctl net.wlan.devices 

net.wlan.devices: iwm0 




[root at skynet] ~# pciconf -vl | grep -B2 Wireless 

iwm0 at pci0:3:0:0: class=0x028000 card=0x11308086 chip=0x24f38086 rev=0x3a hdr=0x00 

vendor = 'Intel Corporation' 

device = 'Wireless 8260' 




[root at skynet] ~# kldstat | grep iwm 

20 1 0xffffffff82764000 1a3fb if_iwm.ko 

21 1 0xffffffff8277f000 23e916 iwm8000Cfw.ko 




[root at skynet] ~# ifconfig wlan0 

wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 

ether a4:34:d9:41:8e:d0 

nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> 

media: IEEE 802.11 Wireless Ethernet autoselect (autoselect) 

status: no carrier 

ssid "" channel 11 (2462 MHz 11g) 

regdomain FCC country US authmode WPA1+WPA2/802.11i privacy ON 

deftxkey UNDEF txpower 30 bmiss 10 scanvalid 60 protmode CTS wme 

roaming MANUAL 

groups: wlan 




[root at skynet] ~# ifconfig wlan0 list scan 

SSID/MESH ID BSSID CHAN RATE S:N INT CAPS 

ATTI5vupPi 78:96:84:8e:f6:50 6 54M -57:-96 100 EP RSN HTCAP WPA WME 

iXsystems 60:e3:27:9f:2f:d4 11 54M -56:-96 100 EPS RSN HTCAP WPA WME ATH WPS