I will share my some experience with Ubuntu 11.10 and ThinkPad E420 (1141 DTQ). Previously I installed Ubuntu 10.04 LTS on my E420. But there were many problems like wifi, Bluetooth connection etc. So I searched some Ubuntu versions which are compatible with ThinkPad E420 series. I got a solution that 11.10 version is certified by Ubuntu for E420 model ( http://www.ubuntu.com/certification/hardware/201103-7425 ). Then I installed 11.10 iso version from site and make my pendrive bootable following the steps in: http://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/ . Then I installed on my Laptop. Everything I experienced OK, except WiFi. I checked the wifi driver version and vendor by the below command: $ lspci | grep -i wifi 08:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01) and realize that it was a Realtek adapter. I lists all the connection using: $ rfkill list 0: tpacpi_bluetooth_sw: Bluetooth Soft b...