Taken from: Envy 0.8.2 has been released!
Envy 0.8.2 features a new option (”5 – Install the ATI/NVIDIA driver Manually”) which which enable users to choose the version of the (ATI/Nvidia) driver between the list of available drivers instead of relying upon Envy’s automatic detection.
I upgraded to feisty this morning using the feisty repositories, and decided to use nvidia-glx; the nvidia-driver package of Ubuntu.
It insisted however on installing an i386kernel-image with the needed i386-extra packages to resolve the dependencies.
The envy version that I had installed and used for Edgy; envy0.8.1-ubuntu7.
Maybe this has been noted before, but here is the solution if you plan to upgrade to feisty and have the same issue.
First:
sudo apt-get install linux-restricted-modules-`uname -r`
Then:
sudo apt-get install nvidia-glx
That solved it for me 
Hoping to see envy for Feisty soon!
