Hello Ilia, regarding (a) and (b): I am just waiting for a rpmbuild of an OL6 version of 3.13-rc3 to finish and will report back on my findings and include a dmesg output from that version. Regarding (c): Would'nt it make more sense than starting with 3.6 release and 3.7 release tags to first rule out the "mega commit"? Can you give me the git commands (or point me to a doc that tells me how to produce them) for getting "ordinary kernel tarballs" out of the DRM nouveau git just like the ones published on https://www.kernel.org/pub/linux/kernel/v3.0/testing/ for two points in time in between 3.6 and 3.7: (1) for the version up to the immediate commit BEFORE the "mega commit" (2) for the version exactly matching the "mega commit"? Using these two kernel tarballs, I could then either confirm or rule out the "mega commit" as the root cause for the issue, and in the (unlikely) case the mega commit can indeed be ruled out, I could then concentrate on further narrowing down the commits * either between 3.6 and the mega commit if build (1) is already broken * or between the mega commit and 3.7 if build (2) still works, but 3.7 fails? Sorry, but rather than pulling the whole git on my poor old laptop and starting a huge number of bisection attemps "into the blue", I think that this makes more sense and does not require me to become a git expert in order to try and help tracking this down... ;-) What do you think? I will report back shortly with my 3.13-rc3 results... BR, Andreas