https://bugs.freedesktop.org/show_bug.cgi?id=88364
--- Comment #9 from Alex Deucher alexdeucher@gmail.com --- Can you attach a full dmesg output (i.e., I want to see the bootup output, not the hang stuff)? Also does booting with either radeon.runpm=0 or radoen.dpm=0 on the kernel command line in grub help?