I think my suggestion was a red herring. Did some more testing this
afternoon. After removing the option line from/etc/modprobe.d/iwlwifi.conf
and rebooting again, wifi still works. So the "fix" seems to be a simple
reboot.
I suspect that something is messed up on first boot after updating the
ker
I think it has something to do with the latest kernel deciding the card has
"N" and then failing when it tries to enable it, leaving the wireless card
disabled.
Issue the command
sudo lshw -c network
and look for the wireless interface info. I bet that it will say "*-network
DISABLED".
This see