Unsure, i'm using Linux 3.12-rc0 right now, with my patched libdrm and patched Mesa builds and need to isolate if the resets are being triggered by various combinations: 1) EXA w/ composite enabled + Second Life with most GLSL programs enabled 2) GLAMOR w/ composite enabled + Second Life with most GLSL programs enabled. Let's keep this still opened, I will stress the GPU with other tests w/o Second Life in an attempt to cause the GPU to stall/reset.