Clean install of Fedora 12 will not bring up login screen after upgrade

[Sam Varshavchik]

John Nissley writes:

> I did a clean installation of Fedora 12 from the CD today and the first 
> boot was fine.  I could log into the computer and get the graphical 
> interface.  I then did a yum upgrade and 500 MB later the upgrade was 
> finished.  I then rebooted the computer and now the boot gets stuck at 
> the f that looks like infinity which is just before the login screen 
> would display.  I can boot into single user mode and also get into text 
> mode but the graphical mode will not give me the login screen.  I saw 
> that there was not a /etc/X11/xorg.conf file so I ran Xorg -configure to 
> create one but that did not help either.
> 
> Any ideas on what could be causing this?

Boot into text mode. Log in on the console, run "startx" and see what 
happens:

1) If you get bounced back to the terminal, save a copy of 
/var/log/Xorg.0.log, then look inside, for clues.

2) If the display hangs, try to switch to another VT using ALT-F2, or 
ALT-F3. Save a copy of /var/log/Xorg.0.log. Ditto.

3) If all else fails, do the three-fingered salute, reboot into text mode, 
log in to the console, then save a copy of /var/log/Xorg.0.log, then look 
inside, for clues. Ditto.

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