https://bugzilla.kernel.org/show_bug.cgi?id=65761
--- Comment #12 from Christoph Haag haagch.christoph@googlemail.com --- Okay, with 3.13 rc7 I can confirm that the acpiphp problem is fixed. Now with everything in the default configuration you can boot and use X without any error.
rmmod radeon still causes nasty crashes.