i just upgraded from 11.10 to 12.4 , now my Intel HD and Nvidia 525 graphic cards is not installed and in additional hardware it cant find them... any solution ??? by the way i used bumblebee to reach more power on my Laptop.
This is actually by design, Optimus laptops are currently not supported by the driver "as is" and will after installation break your desktop (unless you use Bumblebee).
This "bug" is reported at https://bugs.launchpad.net/ubuntu/+source/jockey/+bug/983202
You may still manually install the driver by installing the