I have downloaded and installed Intel's drivers from this link, following all instructions: https://01.org/linuxgraphics/downloads/2013/intelr-linux-graphics-installer-version-1.0.2
However, I would like to return to stock Ubuntu's driver configuration. How would I go about doing this? I've found this link, but it's only for Ubuntu 12.10: http://theclonker.de/?p=89
According to Synaptic, Intel's repository added the following packages locally (may contain typos; forgive me):
i915-3.9-3.8-dkms intel-linux-graphics-installer libdrm-dev libdrm-intel1 libdrm-intel1:i386 libdrm-nouveau2 libdrm-nouveau2:i386 libdrm-radeon1 libdrm-radeon1:i386 libdrm2 libdrm2:i386 libkms1 libva-drm1 libva-egl1 libva-glx1 libva-tpi1 libva-wayland1 libva-X11-1 libva1 x11proto-input-dev xserver-xorg-video-intel
I'm not sure whether the above list is complete and/or exhaustive as to the changes the Intel installer made.
Also important to note, Intel's instructions to delete their repository in Software Sources just flat-out doesn't work. It removes the repository, but keeps the packages installed locally.