A few days ago I messed around with trying to install glx and ended up leaving me stranded with a command line login. Being the noob that I am I atempted the impossible, to fix my xorg.conf. for this you will need too learn a little command line voodoo. nothing to hard.

commands:
cd: enter a directory
ls: list the files in a directory
cp: copy files to another directory
mv: move files to another directory or rename file

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what I did was first enter the directory

$cd /etc/X11/

than list the files in the directory

$ls

I renamed the broken xorg.conf to xorg.conf.broken

/etc/X11$ mv xorg.conf xorg.conf.broken

I made a backup of the backup

sudo cp xorg.conf.backup /home

than made the backup conf file to the default conf by removing the .backup

mv xorg.conf.backup xorg.conf

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rebooted my box and did a little victory dance