Lenovo Z570 phy0 hard blocked solution
If you’ve had issues with wireless being grayed out and you’re unable to enable it on your Lenovo Z570 or any other box, there is a simple solution. You must reset your bios.
There’s an oddity in the bios for Lenovo Z570 machines; even after unblocking all interfaces, you can still see that phy0 is hard blocked, like below:
0: ideapad_wlan: Wireless LAN Soft blocked: no Hard blocked: no 1: ideapad_bluetooth: Bluetooth Soft blocked: no Hard blocked: no 2: phy0: Wireless LAN Soft blocked: no Hard blocked: yes 3: hci0: Bluetooth Soft blocked: no Hard blocked: no
You may be seeing errors such as:
sudo ifconfig wlan0 up SIOCSIFFLAGS: Operation not possible due to RF-kill
The solution is a reboot. Hit F2 to enter bios, then F9 to reset, then F10 to save and exit. Your wireless should be working at that point.
This is a workaround for the bug located here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/782137