Comment # 21 on bug 105177 from Reimar Imhof

Btw.: There is a new bug showing up with a 4.16.0-rc7 kernel (I did not test
rc1 to rc6): The screen flickers. I can't tell you whats triggers such a
flicker but it does.
That bug is still around with the drm-next-4.17-wip kernel.