https://bugs.freedesktop.org/show_bug.cgi?id=28440
--- Comment #4 from Marcin Slusarz marcin.slusarz@gmail.com 2010-06-08 09:10:50 PDT --- If disabling vesafb fixes your problem, it means vesafb->radeon handoff does not work properly. I fixed similar issue in nouveau code and I can prepare a patch for radeon. Are you willing to test it?