This has been a long existing problem for on my Dell laptops. Always running recent 13-CURRENT and the hardware is
iwm0@pci0:2:0:0: class=0x028000 card=0x00508086 chip=0x24fd8086 rev=0x78 hdr=0x00
vendor = 'Intel Corporation'
device = 'Wireless 8265 / 8275'
class = network
The other Dell laptop has the previous generation of this chip.
After using the laptop "normally" (wired or wireless) for a while, it stops finding networks on scan with the result that roaming almost never works (it doesn't find other networks as I move between work-home). I've tested this with and without lagg failover configured.
As soon as I do 'service netif restart' it can again see all networks with 'ifconfig wlan0 scan'. For a while that is. After a short time (sub-hour to hours), scan will show either only a subset of networks or none at all and the only remedy is to tear down the interfaces and configure them again.
Could you include:
- Exact FreeBSD version (uname -a)
And as attachments:
- /var/run/dmesg.boot output
- pciconf -lv output
- ifconfig -a output on the wlan interface (once associated)
- Any potentially relevant /var/log/messages (or console.log) messages
- Enable net.wlan.debug sysctl , any relevant output
You may also want to try (if relevant):
- wpa_supplicant(8) -d = increase debugging verbosity
- base r324434 - Add support for Intel 8265 WiFi (committer cc'd)
I also note that man iwm only shows (explicit) support for:
Intel Dual Band Wireless AC 8260
If 8265 / 8275 are explicitly supported, it may be worth adding these to the man page