Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I have both an AMD ( HD 7850 ) and an Nvidia ( 8400 GS ) GPU installed on my motherboard.

The Nvidia card is only there because of its S-video port, which I use to output to my old'n'bulky CRT TV. I have no need of it in Ubuntu, and things seem to get fussy at times because of its presence.

I was wondering if there was any way to make Ubuntu ignore its existence. I know that it's possible to disable the Nvidia GPU in Windows via the device manager, but I've so far been unable to find a similar method in Ubuntu. Any ideas?

Please let me know if there is any other information that I should provide :)

System specs:

  • OS: Ubuntu 14.04
  • Motherboard: GA-990FXA-UD3 rev 1.1 F9 bios
  • CPU: AMD Phenom II x4 965 BE
  • GPU 1: AMD Radeon HD 7850
  • GPU 2: Nvidia 8400 GS
  • SPU: Creative Audigy 4 - Sound Blaster
share|improve this question

1 Answer 1

You will have to uninstall the Nvidia drivers, assuming you've previously installed them:

  1. Determine what packages you need to uninstall with:

    $ dpkg --get-selections | grep -i nvidia
    
  2. sudo apt-get purge them.

Note: sudo apt-get purge nvidia-* should also work.

Now, I believe that in order to make sure your Nvidia card isn't used at all by Linux, you will have to blacklist the nouveau driver. You can do so as SU:

(note: omit the # character)

# echo -e "\n\n# Manually blacklisted nouveau so as to ensure Nvidia card is disabled\nblacklist nouveau" >> /etc/modprobe.d/blacklist.conf
share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.