# Display on Internal Graphic Card
Before doing the following steps, make sure your IGFX is enabled

## Disable nouveau driver

sudo vim /etc/modprobe.d/blacklist-nouveau.conf

add corresponding lines

blacklist nouveau
options nouveau modeset=0

save and run

sudo update-initramfs -u

then reboot

## Stop X

sudo service lightdm stop

> Download and install nvidia driver by RUN file without opengl files

sudo ./NVIDIA-Linux-x86_64-XXX.XX.run --no-opengl-files

## write a new xorg.conf to override X server setting
### Internal Graphic Card and 1 External Graphic Card

#All the settings should depends on your H/W setup

Section "ServerLayout"
    Identifier "layout"
    Screen 0 "intel"
    Screen 1 "nvidia"
EndSection

Section "Device"
    Identifier "intel"
    Driver "intel"
    BusID "PCI:0@0:2:0"
    Option "AccelMethod" "SNA"
EndSection

Section "Screen"
    Identifier "intel"
    Device "intel"
EndSection

Section "Device"
    Identifier "nvidia"
    Driver "nvidia"
    BusID "PCI:1@0:0:0"
    Option "ConstrainCursor" "off"
EndSection

Section "Screen"
    Identifier "nvidia"
    Device "nvidia"
    Option "AllowEmptyInitialConfiguration" "on"
    Option "IgnoreDisplayDevices" "CRT"
EndSection

---
### Internal Graphic Card and 2 External Graphic Card

#All the settings should depends on your H/W setup

Section "ServerLayout"
    Identifier "layout"
    Screen 0 "intel"
    Screen 1 "nvidia0"
    Screen 2 "nvidia1"
EndSection

Section "Device"
    Identifier "intel"
    Driver "intel"
    BusID "PCI:0@0:2:0"
    Option "AccelMethod" "SNA"
EndSection

Section "Screen"
    Identifier "intel"
    Device "intel"
EndSection

Section "Device"
    Identifier "nvidia0"
    Driver "nvidia"
    BusID "PCI:1@0:0:0"
    Option "ConstrainCursor" "off"
EndSection

Section "Device"
    Identifier "nvidia1"
    Driver "nvidia"
    BusID "PCI:2@0:0:0"
    Option "ConstrainCursor" "off"
EndSection

Section "Screen"
    Identifier "nvidia0"
    Device "nvidia0"
    Option "AllowEmptyInitialConfiguration" "on"
    Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Screen"
    Identifier "nvidia1"
    Device "nvidia1"
    Option "AllowEmptyInitialConfiguration" "on"
    Option "IgnoreDisplayDevices" "CRT"
EndSection

copy this xorg.conf file to /etc/X11/xorg.conf then reboot