https://bugs.freedesktop.org/show_bug.cgi?id=72921
--- Comment #3 from Arno Schuring aelschuring@hotmail.com --- Created attachment 100359 --> https://bugs.freedesktop.org/attachment.cgi?id=100359&action=edit dmesg
Looks like I'm seeing this same issue with an A8-6500 and linux 3.14: the system reboots within a few seconds after the radeon module gets loaded. The motherboard is an MSI A78M-E45. I'm attaching my (netconsole-captured) dmesg, but no obvious errors are logged. Maybe the probed power states are off, I can't tell. It does look like netconsole mangled some of the output, hope it's still useful.
If I boot with radeon.dpm=0, everything seems fine (though I haven't run anything 3D yet, glxinfo output appears correct). Blacklisting the radeon module also prevents the system from rebooting, but X won't start.