Driver: Installation Failed Toolkit: Installation skipped

Question

I can't install CUDA 8 Toolkit on Ubuntu 14.04. I get this error:

-

$ sudo ./cuda_8.0.44_linux.run 
    ------------------------------------------------------------
    Do you accept the previously read EULA?
    accept/decline/quit: 
    Do you accept the previously read EULA?
    accept/decline/quit: accept

    Install NVIDIA Accelerated Graphics Driver for Linux-x86_64 367.48?
    (y)es/(n)o/(q)uit: yes

    Do you want to install the OpenGL libraries?
    (y)es/(n)o/(q)uit [ default is yes ]: yes

    Do you want to run nvidia-xconfig?
    This will update the system X configuration file so that the NVIDIA X driver
    is used. The pre-existing X configuration file will be backed up.
    This option should not be used on systems that require a custom
    X configuration, such as systems with multiple GPU vendors.
    (y)es/(n)o/(q)uit [ default is no ]: y  

    Install the CUDA 8.0 Toolkit?
    (y)es/(n)o/(q)uit: y

    Enter Toolkit Location
     [ default is /usr/local/cuda-8.0 ]: 

    Do you want to install a symbolic link at /usr/local/cuda?
    (y)es/(n)o/(q)uit: y

    Install the CUDA 8.0 Samples?
    (y)es/(n)o/(q)uit: y

    Enter CUDA Samples Location
     [ default is /home/mona ]: 

    Installing the NVIDIA display driver...
    It appears that an X server is running. Please exit X before installation. If you're sure that X is not running, but are getting this error, please delete any X lock files in /tmp.

    ===========
    = Summary =
    ===========

    Driver:   Installation Failed
    Toolkit:  Installation skipped
    Samples:  Installation skipped


    Logfile is /tmp/cuda_install_1976.log

Thsi are the log files: http://pastebin.com/KLAZ4b5g and http://pastebin.com/wRJq8t51 I also had installed this Nvidia driver for Tesla K40c GPU prior to installing the CUDA 8 Toolkit.

NVIDIA-Linux-x86_64-361.93.02.run

Any guidance as what to fix?

Answer 1

Firstly pay heed to the warning:

This option should not be used on systems that require a custom
X configuration, such as systems with multiple GPU vendors.

On my laptop I have an Intel HD4000 GPU and Nvidia GT650M so it could be a warning for me. Be sure of what you are installing!

As far as the error message, you have to run the installation through the console when X-Server isn't running. Reboot your machine. At the normal Ubuntu gooey (GUI) login prompt press Ctrl+Alt+F1 and the console (text based) login will appear. Enter your user ID and password.

Then type:

sudo ./cuda_8.0.44_linux.run

Then reboot by typing:

sudo reboot

Login normally at the regular GUI prompt.

If there still is a problem post comment below.

Answer 2

I know it's been a while here, but to help out others in this situation, look at the warning about an X server running. On Ubuntu, this usually means that you should stop lightdm:

sudo service lightdm stop

NOTE: You must be in a tty shell to do this, so you'll need to press ctrl + alt + F1 (Or most other function keys, if that didn't work).

Now run the NVIDIA installer.

NOTE: Stopping lightdm will kill your GUI, so you'll need to reboot or type the following command to restart it:

sudo service lightdm start

Since you'll have to reboot anyway, this is probably unnecessary, but I thought you'd like to know how to reverse it :)