Testi8ng the AMD Catalyst, Radeon, Nouveau, NVIDIA, and Intel graphics drivers on Linux. Each driver / GPU was tested with the Unity 6.6, GNOME Shell 3.6.2, GNOME Classic 3.6.2, KDE Plasma 4.9.90, Xfce 4.10, and LXDE 0.5.11 as from the Ubuntu 13.04 Raring Ringtail repository in early December. Benchmarking by Michael Larabel for a future article on Phoronix.com.