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ThinkPad E420 – Fixing Linux Wi-fi issues

Lenovo E420 wifi issues on Linux

If you own ThinkPad Edge E420 and installed linux on it, you had probably issues with Wi-fi connection. Let’s see how we can fix them.

As in my case with OpenSUSE 12.1 and Linux Mint 12 Lisa (derivates should work as well) every time I turned Wi-fi ON, it immediately turned back OFF.

Fixing this is pretty easy – all you need is rfkill package. You can install it in your Software Manager. With rfkill installed, open up your terminal and enter commands below:

allien@linux-mob7:~> su
linux-mob7:/home/allien # rmmod -f acer-wmi
linux-mob7:/home/allien # rfkill unblock all
linux-mob7:/home/allien # rfkill list all
0: tpacpi_bluetooth_sw: Bluetooth
Soft blocked: no
Hard blocked: no
1: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
linux-mob7:/home/allien # echo “blacklist acer-wmi” >> /etc/modprobe.d/blacklist.conf
linux-mob7:/home/allien # exit

And there you go – your wi-fi should be alright.

If you tried that in different distributions, let others know in comments, so they’ll know. Thanks.

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Martin Allien

Graphic & Web Design freelancer from Prague. Loving opensource not because it's free, but 'cos it's open. Fighter for privacy, anonymity and freedom.
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