https://bugzilla.kernel.org/show_bug.cgi?id=61811

--- Comment #20 from Dieter Nützel Dieter@nuetzel-hh.de --- (In reply to Bjorn Helgaas from comment #17)

Bruno or Dieter, can you try Jean's patch from the email mentioned in comment #16? If v3.12-rc2 + Jean's patch solves the problem, it might save you a lot of bisect time.

3.12-rc2 + Jean's patch

Running with radeon.agpmode=-1. Direct way to 3.12-rc3, please ;-)

Tested-by Dieter@nuetzel-hh.de