As a consequence of rolling out CR updates on Latitude E7470 (Skylake
chipset), X would no longer start until I rolled back all of the
xorg-\* packages. And to be more precise, looks like the culprit is
as the CR package release version matches the one mentioned in Comment
#2, in the regression context.
I’ve already submitted a bug report: https://bugs.CentOS.org/view.php?id717
so I just wanted to bring this issue to attention of anyone who’s
running this chipset/VGA.