Comment 2 for bug 1307546

I'm not certain the release upgrader made this change. xorg_fix_proprietary.py does look at xorg.conf but it doesn't back it up and it doesn't look like it ran during your upgrade.

2014-04-14 08:45:36,097 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py'
2014-04-14 08:45:36,134 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py (Failed to execute child process "./xorg_fix_proprietary.py" (No such file or directory))