I am running the PI2 with a hifi shield, an usb stick, and a wifi dongle.
I usualy dont turn it off.
today it was not showing on the network, reboot did not help either, so i carry it to the router and plug it in directly.
config page showing “no wifi interfaces”.
i log in via SSH, and sure enough ifconfig shows nothing.
curious i ls /dev and lsusb. (as root)
neither my stick nor the wifi dongle shows up.