I have a Raedon 6770 Graphics card and am running Mavericks just fine on 10.9.1. However, when I made several attempts to update to 10.9.2 (and 10.9.3), I lost all graphics support (sorry if I lose track of terminology, it's been a while since I've ran into issues) and I could only use mirrored monitors (it only detected one monitor) and I had no QE/CI.
I remember making several attempts to get Mavericks working properly and I honeslty do not remember which method I used to finally get my graphics working. It might have been special kexts, but I also found an EFI string in com.apple.boot.plist (and org.chameleon.boot.plist) which may be related.
Anywho, is there a good way to find kexts that may not belong/may have been modified? Or is there any reason that the EFI string would have stopped working with my upgrade if that's what it was?
If it helps, the EFI string that I'm using is:
Thanks in advance, and let me know if there is anything else I can do to give you more info
On a side note, if I'm using chameleon, does com.apple.boot.plist actually get used still or does it use Extra\org.chameleon.boot.plist only (or both)?