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I blacklisted my NVIDIA graphic card by putting it in /etc/modprobe.d/blacklist.conf, I would like to know how it reduces my power consumption

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closed as too broad by Tog, Mokubai, Carl B, laurent, Shakehar Oct 13 '13 at 19:56

There are either too many possible answers, or good answers would be too long for this format. Please add details to narrow the answer set or to isolate an issue that can be answered in a few paragraphs.If this question can be reworded to fit the rules in the help center, please edit the question.

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Get a power meter, test system. Un-blacklist card, test system again. Voila. Not meaning to b rude but how can you expect us to know this? We don't know what card you have and without a lot of trawling through proprietary code we cannot easily find out. The easiest way is for you to stump up the money for a cheap power meter and find out. –  Mokubai Oct 8 '13 at 16:51
    
There are too many possible answers for this question because there are too many factors. Since you're not physically removing the card and instead blacklisting it via the OS, the answer is entirely dependent on your unique setup. This question is only answerable by you. –  Moses Oct 8 '13 at 17:11
    
My question was how does /etc/modprobe.d/blacklist.conf effectively works in disabling/blacklisting my graphic card and help in saving battery –  jdk2588 Oct 8 '13 at 20:07
    
@jdk2588 We get what the question is, but we have no way at all to know. The card could power up into a fully loaded power state and by refusing to let it scan for drivers you might be blocking the operating system from putting it in a lower powerstate. Conversely it might as you expect be in a lower power state and you are preventing it from going into a higher mode. We have no idea what Nvidia have set up in the video card firmware and we have no access to their code (and low level instruction sets) to find out. Only you can answer the question by getting a power meter as I said. –  Mokubai Oct 9 '13 at 20:37
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1 Answer

Measure the power consumption with an electric meter. Then you can report back to us what the answer was.

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