Bug#803112: same problem on integrated Intel graphics

[Brent S. Elmer Ph.D.]

I have the same problem on a machine with integrated Intel graphics.  I
have no xorg.conf on that machine.
I only have one monitor connected but I get the black screen with mouse
cursor in the middle which is unresponsive.  cntl alt f* also does not
work.  This only started when upgrading to gdm3 3.18.0-2.  Reverting
gdm3 to 3.14 fixes the problem.