Airplane mode won' t turn off and wireless won' t turn on
My Wi-Fi appears to be disconnected because the airplane mode suddenly turned on but will not toggle to the off position. I went in a terminal and typed sudo rfkill unblock all after looking at the list but nothing happens.
Airplane mode must be turned on by hardware switch. Locate the wireless switch and toggle it.
See https://askubuntu.com/a/975455/574724 for more.