Comment 36 for bug 1007765

Alright, I installed the -all, image-amd64 and headers-amd64 from http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-precise/ (if I understand correctly, 3.4 the latest stable release of the kernel for precise).

Unfortunately it did not work. The 3.4 kernel was succesfully installed (I guess, since Grub detected it, and I could boot the 3.4 option in Grub, and uname -a reported version 3.4), but Unity 3D didn't start, so Ubuntu fell back to Unity 2D and adjusting the brightness settings still crashed the system (though the screen animation was now slightly different then from the video). Also, all drivers installed using Jockey were disabled and refused to reinstall (including AMD/ATI graphics drivers). Strangely, when I originally installed Ubuntu, Unity 3D worked out of the box with the opensource drivers, but now it fell back to Unity 2D.

Luckely, I could still select the 3.2 kernel in Grub and there Unity 3D still worked fine (except the brightess-crash-problem still occured). I uninstalled the 3.4 kernel files and ran update-grub2 (since that was recommended).