Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am using ubuntu 13.10, and have bumblebee installed. I can see that bumblebeed is running.

I would like to test whether the NVidia card is currently powered. Can I do this?

share|improve this question
Have you solved your problem? – Salem Apr 18 '14 at 12:02
@Salem thanks for reminding me. Your solution is the one. – Owen Apr 18 '14 at 18:13
up vote 1 down vote accepted

You can check that using cat /proc/acpi/bbswitch:

$ cat /proc/acpi/bbswitch 
0000:01:00.0 OFF

If for some reason it stays on when you are not using it, check your Bumblebee configuration (stored in /etc/bumblebee/bumblebee.conf), more precisely the PMMethod value.

share|improve this answer

By default, the Nvidia card is disabled in Bumblebee.

But you can run a program with your Nvidia card using optirun <program name>.

If you installed primus, you can use primusrun <program name>.

glxgears for FPS without Nvidia.
optirun glxgears for FPS with Nvidia.

share|improve this answer

Your Answer


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.