https://bugs.freedesktop.org/show_bug.cgi?id=29579
--- Comment #19 from Juho-Mikko Pellinen juho-mikko.pellinen@lut.fi 2010-08-18 00:35:06 PDT --- AGP is not explicitly loaded, but it's initialization messages appear two seconds before any drm messages. During boot radeon is loaded just before fbcon.
Adding agpgart and amd64_agp to explicitly loaded modules didn't improve this situation.