I'm afraid I've also been bitten by this "upgrade". I have a 3-year-old GeForce4 Ti 4200 card, and I've just found out nVidia have dropped support for this card in their latest drivers. After installing the latest feisty updates, the X server would not start.
In the Xorg log file, there was a message hinting that I needed to install the legacy drivers. So I did "sudo apt-get install nvidia-glx- legacy" and rebooted. That gave me a working X server. But I then found that 3D-accelerated apps would not run (some problem with finding GLX visuals). After looking through the logs and doing some online research, I found a solution: I added this line to the "Device" section of my /etc/X11/xorg.conf : Option "AllowGLXWithComposite" "true" Hope this information is helpful to somebody. -- MASTER: Request for new-legacy nvidia drivers (9631) https://launchpad.net/bugs/96430 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs