Kubuntu Linux 14.04 64 bits, GTX 960 nvidia 352, i7-3770
Broken: 2.77a, buildbot
Short description of error
In this scene:
circular/radial bands appear. I do not know if they should be there, but the point is that GPU/CPU render result do not match, and the bands are most noticeable with CPU:
Exact steps for others to reproduce the error
Open the scene, configure for CPU or GPU and render.