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On my desktop, I have a GTX560Ti which I use for CUDA and display I have installed the installed the nvidia driver and everything works fine

I have an Intel HD Graphics 3000 integrated in my CPU. I want to use this graphic card for my display, instead of my Nvidia card.

How to proceed ? How to install Intel Driver vithout breaking CUDA ?

My ubuntu is 12.04

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A brief summary if you start with a clean Ubuntu (13.10, but should generalize): osdf.github.io/blog/… –  osdf Mar 12 at 8:52
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2 Answers 2

The trick is to load nvidia card in to the device without module nvidia, because nsight don't need this module to debug. And I don't need nvidia module as a display.

Here is what I did:

I add the file named nvidia_cuda into /etc/init.d and make it executive by chmod +X

This is given by nvidia, but I commented the line /sbin/modprobe nvidia

#!/bin/bash

# /sbin/modprobe nvidia

if [ "$?" -eq 0 ]; then
  # Count the number of NVIDIA controllers found.
  NVDEVS=`lspci | grep -i NVIDIA`
  N3D=`echo "$NVDEVS" | grep "3D controller" | wc -l`
  NVGA=`echo "$NVDEVS" | grep "VGA compatible controller" | wc -l`

   N=`expr $N3D + $NVGA - 1`
   for i in `seq 0 $N`; do
     mknod -m 666 /dev/nvidia$i c 195 $i
   done

   mknod -m 666 /dev/nvidiactl c 195 255

 else
   exit 1
 fi

This file is from http://docs.nvidia.com/cuda/cuda-getting-started-guide-for-linux/#runfile-installation 2.5.2. Runfile Installation, Step 6.

But first you need to verify that you have both cards as pci device. I enabled intel multi-display in BIOS to get this.

$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
01:00.0 VGA compatible controller: NVIDIA Corporation GK208 [GeForce GT 635] (rev a1)
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install common Graphics driver package: It will select appropriate file for the display:

sudo apt-get install xserver-xorg-video-all
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