Thanks so much, this solved a similar problem I was having. In my case, I’d just installed a proprietary graphics driver, and when I rebooted, my screen went to sleep — as if there were no video input.
Switching to a different tty (ctrl-alt-f1 through ctrl-alt-f6) made the screen wake up and allowed me to log in (command-line only).
Then, renaming the xorg.conf file as per your instructions did the trick — after a reboot, I was able to use TTY7/x11 again. Thanks!