Comment 147 for bug 999910

It is true that the 12.10 backport stack is not discoverable unless you know where to look. That said, 12.04.2 images use it, and 12.04.3 will use the stack from 13.04. The backport stacks are fully supported until the stack from 14.04 is backported, at which point the older stack users are auto-upgraded to that stack.

The bug you mentioned shows that Debian backported the whole drm subsystem from 3.4.29 to their 3.2 based kernel, so suggesting we do the same at this point is a bit silly. Cherry-picking individual fixes can work only when you can pinpoint a single commit fixing stuff. With drm drivers however bugfixes usually mean parts of the driver getting rewritten to match some new world order, so backporting gets increasingly difficult over time and kernel releases.

So just install xserver-xorg-lts-quantal and get a more stable system. You can also use the 'r' kernel which should be available on precise already, or soon will be.