I've searched all over my logs, and can't find any faults.  My HP Pavilion
(A10-8700P) runing Kubuntu 16.04 and using the AMDgpu driver randomly black
screens.  A suspend/resume will get it working again for a very short period of
time.  I've been debuging this all week - I've tried a new kernel, I've also
tried the amdgpu.exp_hd_support=1 boot parameter, I've gone through everything
think it might have been a DPMS issue.  When it occurs, it happens on the
internal and external display if hooked up.  For me, I can replicate the issue
by booting the computer and letting it sit at the log in, or I log in and use
the computer.  The occurrence is random and never the same.