https://bugs.freedesktop.org/show_bug.cgi?id=79980
--- Comment #168 from DJ Dunn djdunn.safety@gmail.com --- if this helps any, I've been seeing the same error on my gentoo box, its near constant on 3.16+ kernels within 2 or 3 min of loging in X but, ive been seeing it very rarely (once every few hours) on 3.14.22 but still seeing it, and I never seen it happen on 3.14.19
gentoo box with mesa-10.3.1 xorg-server-1.16.1