Description of problem:
starting installation with gui mode failed
and Xorg segmentation fault

Steps to Reproduce:
1.install CentOS7.4 on the machine with the nvidia GPU

Actual results:
starting installation with gui mode failed

Expected results:
start installation with gui mode successfully

Additional info:
the following versions are OK
CnetOS 7.3 7.2

the following versions have this problem
CentOS 7.4 rhel 7.5

adding  "modprobe.blacklist=nouveau" to the grub commandline will avoid this
failure