Bug#903679: Bad: 4.16.16-2

[積丹尼 Dan Jacobson]

Problem turns out not to be related to xrandr.
Problem occurs when starting or stopping X windows.
OK:  linux-image-4.16.0-1-amd64:amd64 4.16.5-1
Bad: linux-image-4.16.0-2-amd64:amd64 4.16.16-2