> Thanks for responding. I really don't know why I have the problem > my computer is a Dell computer with the standard parts. > I am not sure that your fix will work for me. > I am using the computer remotely and am still looking for a > solution. > Thanks > Shoshana I just upgraded to CentOS 6.9 and my problem went away. Xorg now started on my machine with the MACH64 video chip. Hooray for our side. Bob