Wireless on Ubuntu 11.10 and Lenovo Thinkpad E420

Unlike 11.04 and earlier, Ubuntu 11.10 runs much better on Lenovo Thinkpad E420. The only glitch is the wifi drivers which don’t run by default, and it could be corrected easily

Using LiveCD or a running system

  • Press Super (Window) key, and open Terminal
  • Type sudo modprobe -r acer_wmi

That’s all. You should be able to connect to the wireless till next reboot.

Making the change permanent

Edit the file /etc/modprobe.d/blacklist.conf and in the end type

blacklist acer_wmi

Reboot and you’re done. If you’re doing it entirely from the GUI, then editing the file could be done by pressing ALT+F2 (this would open a “Run” window) and typing there gksu gedit /etc/modprobe.d/blacklist.conf

Please note: This applies to wireless card having rtl8188ce chipset. You can view that by typing lspci in a terminal and searching for the entries respective to Network Controller.