sudo apt-get install nvidia-glxor
sudo apt-get install nvidia-glx-newI think both work, and I used the later one. You might also need to go to “Application -> System -> Restricted Drivers Manager” to enable the “NVIDIA accelerated grahics drive”, if it is disabled, enable it and restart your computer. The last thing is to update the xorg.conf file to tell Ubuntu how to handle dual monitor, this is the xorg.conf file which makes my dual monitor working on my Ubuntu Feisty:
# xorg.conf (X.Org X Window System server configuration file) # # This file was generated by dexconf, the Debian X Configuration tool, using # values from the debconf database. # # Edit this file with caution, and see the xorg.conf manual page. # (Type "man xorg.conf" at the shell prompt.) # # This file is automatically updated on xserver-xorg package upgrades *only* # if it has not been modified since the last upgrade of the xserver-xorg # package. # # If you have edited this file but would like it to be automatically updated # again, run the following command: # sudo dpkg-reconfigure -phigh xserver-xorg Section "InputDevice" Identifier "Generic Keyboard" Driver "kbd" Option "XkbRules" "xorg" Option "XkbModel" "pc105" Option "XkbLayout" "us" EndSection Section "InputDevice" Identifier "Configured Mouse" Driver "mouse" Option "CorePointer" EndSection Section "Device" Identifier "Configured Video Device" Driver "i810" Busid "PCI:0:2:0" EndSection Section "Device" Identifier "Second Video" Driver "nv" BusID "PCI:1:1:0" EndSection Section "Monitor" Identifier "DELL E196FP" EndSection Section "Monitor" Identifier "Second Monitor" EndSection Section "Screen" Identifier "Default Screen" Monitor "DELL E196FP" Device "Configured Video Device" EndSection Section "Screen" Identifier "Second Screen" Monitor "Second Monitor" Device "Second Video" EndSection Section "ServerLayout" Identifier "Default Layout" Screen 0 "Default Screen" 0 0 Screen 1 "Second Screen" rightof "Default Screen" EndSection Section "DRI" Mode 0666 EndSection Section "Extensions" Option "Composite" "0" EndSection Section "ServerFlags" Option "Xinerama" "true" EndSectionThere is also an article about the same topic from ubuntugeek. Looks like his xorg.conf is simpler, but both work. Good luck.