Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

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 have installed ironhide using ppa [11.10 - 32 bit, Dell xps 15]. After rebooting I tried to disable nvidia gpu using the command "sudo ironhide-disablecard". I got message as "ERROR : no module for nvidia found at /proc/modules" and "nvidia card disabled successfully". Is it a normal behavior? Please note I tried disabling the card without trying to enable it.

Thank You
share|improve this question
I would try installing Bumblebee 3.0. A bit of info here:… – 719016 Feb 18 '12 at 11:34
Did you try a recent version of Ubuntu and Bumblebee? – 719016 Jun 9 '12 at 15:11

Currently ironhide is no longer maintained. You should install Bumblebee instead using the bumblebee/stable ppa.

But to answer your question: "Disabling" the nvidia card in this way does nothing. By default the nvidia card is not used, only when using optirun <command>. The nvidia card cannot be disabled any more then to deprive it of it's drivers and run on intel only.

However there is a possible workaround I read, which is to reverse engineer the windows drivers to find the ACPI calls needed, then create a script for it yourself. Not recommended unless you are an expert on this.

share|improve this answer
As a Bumblebee developer, I can tell you for sure that we're not reverse engineering the Windows drivers. After analysis of a lot ACPI tables, I crafted a new module for toggling the power. Expect the new release within two weeks. – Lekensteyn Jan 3 '12 at 9:38
That's another way to find them. Didn't mean to suggest you were doing so. Great to hear this development. I look forward to it! – Beanow Jan 3 '12 at 10:07
FYI, Bumblebee 3.0 has been released a few days ago and detects the right method automatically. There is no need for customizing ACPI calls anymore. – Lekensteyn Jan 26 '12 at 13:52
Ty, running it with great enjoyment of my added battery time and greater resolutions on my MiniDP. – Beanow Jan 27 '12 at 16:12

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.