Comment # 16 on bug 905351 from Wolfgang Bauer

PS, another thing just sprang to my mind:
The nvidia driver 343.x as installed by nvidia-bumblebee dropped support for
anything below GTX 420.
Maybe a note about this should be added to the documentation as well.

Especially back when nvidia-bumblebee was updated to 343.x we had a few reports
in the forums from users with GTX 2xx and 3xx about their optirun suddenly
breaking.

Personally I think it would be a good idea to add a nvidia-bumblebee-legacy (or
similarly named) package to the Bumblebee repo that installs 340.xx, but that's
of course also stuff for a separate bug report if necessary. ;)