https://bugs.freedesktop.org/show_bug.cgi?id=106303
--- Comment #5 from Mike bugs.freedesktop.org@pm.port0.org ---
Can you bisect?
No, I'm using pre-compiled kernels. However, it's clearly happens in-between 4.15.8 and 4.16.{0 .. 2}. Reproduces stably.
Are you using multiple monitors?
No, single monitor via DisplayPort (2560x1440x144).
PS. I'm also use amdgpu.dc=1