http://kb.parallels.com/en/122934 gives instructions for getting CentOS 7.1 to stop X from crashing, but unfortunately it breaks gnome-control-center. From the logs:
Apr 24 16:02:16 btlaptop gnome-session: (gnome-control-center:3834): Clutter-CRITICAL **: Unable to initialize Clutter: Unable to create suitable GL context
Apr 24 16:02:16 btlaptop gnome-session: ** (gnome-control-center:3834): CRITICAL **: Unable to initialize Clutter
Apr 24 16:02:16 btlaptop gnome-session: (gnome-control-center:3834): Clutter-CRITICAL **: Unable to initialize Clutter: Unable to create suitable GL context
Apr 24 16:02:16 btlaptop gnome-session: (gnome-control-center:3834): Gtk-CRITICAL **: gtk_window_present_with_time: assertion 'GTK_IS_WINDOW (window)' failed
Apr 24 16:02:16 btlaptop kernel: gnome-control-c[3834]: segfault at 40 ip 000000000044b207 sp 00007fff213849a0 error 4 in gnome-control-center[400000+379000]
This is my first time posting here, not even sure if this is the right way to go about reporting a problem. Any feedback appreciated!