My netbook cannot access the wifi network, and I cannot enable it. This is the second time this has happenned. The first time, it came back after a lot of restarts and BIOS factory resets.
Ubuntu sometimes simply won't connect to any wifi networks, and other times it will say that the wireless is blocked by a hardware switch.
I have tried pressing F2 and doing a BIOS reset, with no luck.
sudo rfkill list all gives :
0: phy0: Wireless LAN Soft blocked: no Hard blocked: yes 1: dell-wifi: Wireless LAN Soft blocked: yes Hard blocked: yes