[CentOS] X login screen fails on the first try

On 10/1/07, Frank Cox <theatre at sasktel.net> wrote:
> I moved it to another location on Saturday afternoon and, again, it booted up
> and worked fine.
>
> It was rebooted this morning and now the graphical login screen doesn't
> appear.  Everything appears to load normally but once the text login screen
> appears, that's it.  No graphical login screen.

Make sure DNS is working properly.  For some reason, Xorg and/or GDM
has a problem starting up if networking is unavailable and/or DNS
lookups can't be performed.

Some judicious editing of /etc/hosts may work around this.