nvidia-driver-bumblebee ?

[Andreas Beckmann]

On 2015-11-12 23:34, Luca Boccassi wrote:
> Unfortunately same problem as before. The legacy-340xx works, but if I
> select nvidia-current (via update-glx too) it loads the right kernel
> module but it complains that the client is the 340xx. It looks like the
> symlinks are pointing to the right version (nvidia-current) so not sure
> where that is coming from.

Did you restart bumblebeed? Maybe it still knows about the old libs ...

Does it work after
  update-glx ... && reboot
?

Andreas