How to unblock something listed in rfkill?

Solution 1:

"Hard blocked" cannot be changed by software, look for a wifi toggle on your keyboard or edges of the laptop; the device can also be hard blocked if disabled in the bios.

"Soft blocked" means "blocked by software". A faulty driver or other kernel module can lead to connectivity loss.

Some methods to get WiFi working are described on help.ubuntu.com/

There is also a Launchpad question on this issue: answers.launchpad.net

Solution 2:

You can try a specify device like

 rfkill unblock bluetooth

Solution 3:

You have to blacklist the acer-wmi kernel module:

sudo nano /etc/modprobe.d/blacklist.conf

add blacklist acer_wmi as a new line at the bottom of this file.

then reboot.

Or if you like one-line:

echo blacklist acer-wmi | sudo tee -a /etc/modprobe.d/blacklist-acer-wmi.conf