Comment 15 for bug 107915

Michael Vogt:
I see your point, however that step won't solve the problem if a user used the Nvidia installer (the one from Nvidia's website) to install the driver.

If you want to add an error dialog, at least please let it show up only if envy < 0.9.2 (since 0.9.2 supports Feisty while older versions don't).

another thing to check would be:
if nvidia-glx > 8776 then purge nvidia-glx and install the new nvidia-glx (same thing should apply to nvidia-glx-dev and nvidia-kernel-source) [nothing has to be done for the legacy driver since Envy used Ubuntu's nvidia-legacy-kernel-source]
if xorg-driver-fglrx > whatever the version in Edgy's repositories was then do the same thing.

Please, let me know your decision.

P.S. if you want I can give you a hand with the code (pyGTK).