Comment 10 for bug 1444436

sudo apt-get install xserver-xorg-video-intel/trusty-proposed -s
on xorg-video-abi-15 leads to:

Reading package lists... Done
Building dependency tree
Reading state information... Done
Selected version '2:2.99.910-0ubuntu1.5' (Ubuntu:14.04/trusty-proposed [amd64]) for 'xserver-xorg-video-intel'
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 xserver-xorg-video-intel : Depends: xorg-video-abi-15
                            Depends: xserver-xorg-core (>= 2:1.14.99.902)