I just installed 14.04.1 on my T440s. Here is how I installed the 3.16 kernel and got wifi working by adding utopic (14.10) sources to apt.
BE WARNED: This may be dangerous.
Edit /etc/apt/sources.list and add the lines: deb http://archive.ubuntu.com/ubuntu/ utopic main restricted deb http://archive.ubuntu.com/ubuntu/ utopic-updates main restricted deb http://archive.ubuntu.com/ubuntu/ utopic-security main restricted
apt-get update apt-get install linux-generic linux-firmware DO NOT UPGRADE or DIST-UPGRADE!!! Check that you'll be installing 3.16-x before hitting Y.
Edit /etc/apt/sources.list and COMMENT OUT the three lines from above: #deb http://archive.ubuntu.com/ubuntu/ utopic main restricted #deb http://archive.ubuntu.com/ubuntu/ utopic-updates main restricted #deb http://archive.ubuntu.com/ubuntu/ utopic-security main restricted
apt-get update ^^^ THIS IS IMPORTANT TO NOT RUIN YOUR SYSTEM^^^
Reboot and enjoy wireless. Occasionally repeat the procedure above to check for kernel upgrades.
I just installed 14.04.1 on my T440s. Here is how I installed the 3.16 kernel and got wifi working by adding utopic (14.10) sources to apt.
BE WARNED: This may be dangerous.
Edit /etc/apt/ sources. list and add the lines: archive. ubuntu. com/ubuntu/ utopic main restricted archive. ubuntu. com/ubuntu/ utopic-updates main restricted archive. ubuntu. com/ubuntu/ utopic-security main restricted
deb http://
deb http://
deb http://
apt-get update
apt-get install linux-generic linux-firmware
DO NOT UPGRADE or DIST-UPGRADE!!!
Check that you'll be installing 3.16-x before hitting Y.
Edit /etc/apt/ sources. list and COMMENT OUT the three lines from above: archive. ubuntu. com/ubuntu/ utopic main restricted archive. ubuntu. com/ubuntu/ utopic-updates main restricted archive. ubuntu. com/ubuntu/ utopic-security main restricted
#deb http://
#deb http://
#deb http://
apt-get update
^^^ THIS IS IMPORTANT TO NOT RUIN YOUR SYSTEM^^^
Reboot and enjoy wireless. Occasionally repeat the procedure above to check for kernel upgrades.