Comment 127 for bug 1104230

So I was trying to follow this and get this set up on my Lenovo T440P with a pro doc and two monitors (vga and dvi). I finally got it working by taking the following steps, this took me a few days so if anyone finds this maybe it'll help them too.

Initially I was on Trusty 14.04.

* Then I added ther repos here;
sudo add-apt-repository ppa:dgadomski/linux-mst
sudo add-apt-repository ppa:xorg-edgers/ppa
sudo apt-get install xserver-xorg-video-intel
sudo reboot

* No success, read more, looked like the stuff was in 14.10 so I upgraded to 14.10.

* To upgrade to 14.10, you navigate to Dash, type "Software & Updates", goto the 3rd tab "Updates", change the bottom option to "For any new version".
* Then opened Dash, and ran "Software Updater" and let it update took a while.
* Rebooted, no success.
* Then I noticed the 3.13 / 3.16 / 3.17 talk and decided I'd try updating my kernal. Followed steps to update my kernal from 3.16 to 3.17 as described here (http://ubuntuhandbook.org/index.php/2014/11/how-to-upgrade-to-linux-kernel-3-17-4-in-ubuntu-14-10/);

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.17.4-vivid/linux-image-3.17.4-031704-generic_3.17.4-031704.201411211317_amd64.deb
sudo dpkg -i linux-headers-3.17.4-*.deb linux-image-3.17.4-*.deb
* Rebooted
Worked!

Again I'm just sharing how I got this to work for me to help others if they come upon this.