Matthias Clasen on the behalf of the GNOME Release Team has announced that they have decided to eliminate GNOME’s “fallback mode” with the upcoming 3.8 release that allowed a “GNOME classic” mode that didn’t depend upon OpenGL/3D rendering and was more like the GNOME2 traitional desktop.

via [Phoronix] GNOME 3.8 Is Dropping Its Fallback Mode.

Now for GNOME users without a proper GPU and drivers, if you want to still use GNOME, you will need to use LLVMpipe for a software-accelerated experience of the GNOME Shell.

Gnome has totally gone off the rails.  Luckily there is a fork for Gnome called Mate.  Mate is supposed to be shipped with Fedora 18.  I have used Mate in a Linux Mint virtual machine and it works well.  I tried loading it into a Fedora 17 VM many months ago and it had problems but I’m sure all of that will get worked out.  IMHO, Gnome has become a product of hubris.  I’ve tried to use it and just can’t deal with the constant context switching to do simple tasks like opening a terminal window.