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Gabs
Asked: 2015-06-25 11:51:10 +0800 CST

Install CUDA 7.0 on Ubuntu 14.04.2

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I am trying to install CUDA 7.0 on Ubuntu 14.04.2. I already tried everything suggested here and here. I have also tried many other tutorials, which mostly, say the same things.

The main problems when I try to install CUDA are:

  1. I get stuck on the login screen and nothing that I do can solve it. Already tried, among many other "solutions", this one.
  2. If I manage to install CUDA properly, Ubuntu freezes randomly and I am forced to shut it down or reinstall Ubuntu;

Can somebody please help me? I already reinstalled Ubuntu more than 5 times...

Thanks in advance,

14.04

2 Answers

  1. Found this floating around on the web:

    Install wget:

    sudo apt-get install wget

    Change to the temp directory:

    cd /tmp

    Download CUDA 7.0 repository:

    wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_7.0-28_amd64.deb

    Install CUDA repository:

    sudo dpkg -i cuda-repo-ubuntu1404_7.0-28_amd64.deb

    Update the repository listings:

    sudo apt-get update -y

    Install CUDA 7.0:

    sudo apt-get install cuda-toolkit-7-0 -y
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  2. Best Answer

    If you followed the nvidia tutorial you probably installed the proprietary drivers. I haven't had much luck with those, so here is a solution using the modified drivers. Make sure to remove any nvidia drivers or cuda installation before following these instructions.

    Install the drivers:

    sudo add-apt-repository ppa:xorg-edgers/ppa
sudo apt-get update
sudo apt-get install nvidia-XXX nvidia-prime

    Restart your computer and make sure the drivers installed correctly. To check, install nvidia x server settings. If your gpu is found, this software will display information about your graphics card.

    Next install the cuda toolkit from standard repository:

    sudo apt-get install nvdia-cuda-toolkit

    Then install the correct cuda library from the repository added earlier:

    sudo apt-get install libcuda1-XXX
sudo add-apt-repository -r ppa:xorg-edgers/ppa

    XXX in the above will depend on what graphics card you have (higher XXX means a newer driver). For me (I have an nvidia 970M) it was 346 (EDIT: this was the latest driver at the time, it's now 361. Most video cards will be compatible with the latest driver, but check the nvidia website to be safe).

    Finally, try running deviceQuery (may have to run as sudo) to see if cuda is installed and finding your gpu.

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