https://bugzilla.kernel.org/show_bug.cgi?id=22312

--- Comment #9 from Alex Deucher alexdeucher@gmail.com --- (In reply to Chris Nystrom from comment #8)

Yes. I am having this exact error message with a live Fedora 20 DVD on a Dell OptiPlex 780 with a PCIe ASUS Radeon R7 240 video card. The desktop never comes up.

Please attach your dmesg output.