Comment 173 for bug 1239578

Revision history for this message
bulldozer2003 (bulldozer2003) wrote :

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.