Created attachment 228954 [details]
My machine has a Intel AC9560 as seen in pciconf -lv:
iwm0@pci0:0:20:3: class=0x028000 rev=0x10 hdr=0x00 vendor=0x8086 device=0xa370 subvendor=0x8086 subdevice=0x0030
vendor = 'Intel Corporation'
device = 'Wireless-AC 9560 [Jefferson Peak]'
class = network
But when booting it fails to attach it:
iwm0: <Intel(R) Dual Band Wireless AC 9560> mem 0xb1134000-0xb1137fff at device 20.3 on pci0
iwm0: fw chunk addr 0x404000 len 712 failed to load
iwm0: iwm_pcie_load_section: Could not load the  uCode section
iwm0: iwm_start_fw: failed 60
iwm0: Failed to start INIT ucode: 60
I have this in my loader.conf:
I've attached the whole dmesg, this machine is running 13.0-RELEASE, amd64.
I'll likely take this and would suggest simply trying https://wiki.freebsd.org/WiFi/Iwlwifi once the next snapshot is out in a few days. I'll get back to you then.