https://bugzilla.kernel.org/show_bug.cgi?id=195231
--- Comment #9 from Rogério Brito (rbrito@ime.usp.br) --- (In reply to Alex Deucher from comment #2)
Please attach your xorg log and dmesg output. Does appending radeon.runpm=0 on the kernel command line in grub help?
Dear Alex and other developers, do you need any extra information from me? I will do my best to gather anything that may be helpful in fixing this bug.
Thanks,
Rogério.