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How well do laptops with Nvidia Optimus work?

Ubuntu website stipulates that Dell Vostro 3500 is a certified laptop with a condition that only integrated Intel GPU is used. I installed Ubuntu 11.10 and it seems to be using Nvidia but not the integrated GPU. Although Nvidia seems to be working (I am using the latest Nvidia drivers from their website) I would still prefer to revert to Intel GPU due to lower power consumption. Could someone advise me the best way to do so? I am not an experienced Linux user and would appreciate if one could give me detailed instructions.

Thank you in advance, guys!

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There is a method described (but ONLY for Windows7) at: en.community.dell.com/support-forums/laptop/f/3519/p/19410604/… –  david6 Nov 22 '11 at 5:32
    
If you have found a solution, consider adding/marking it. If not, close or delete? –  Lewis Goddard Feb 24 '12 at 20:42
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marked as duplicate by fossfreedom Feb 24 '12 at 20:44

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I don't see anything that says that laptop comes with both. It likely comes with either Intel graphics or NVidia graphics. (there are a few laptops that come with both). What the page you are referencing is probably saying is that it is certified on the versions of laptops that come with Intel graphics, but not the ones with NVidia graphics.

For that reason, you won't be able to switch to Intel Graphics because it doesn't come with both.

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Many high-end laptops have 'embedded' (low-power) graphics as well as a dedicated (power hungry) graphics chip. This allows BOTH good battery life AND high-end graphics capability, but makes drivers much more complicated. –  david6 Nov 21 '11 at 23:16
    
@david6 - Yes I know that some high-end laptops come with both (this is why I said that in my response). In my brief google searches on that particular laptop, I cannot find any trace of info that says this particular laptop comes with both an Intel AND NVidia graphics chip at the same time. Please let me know if you have information that says differently. –  tgm4883 Nov 22 '11 at 4:55
    
I did find: en.community.dell.com/support-forums/laptop/f/3519/p/19410604/… But I don't have Dell laptop to look at .. –  david6 Nov 22 '11 at 5:14
    
From the Dell support site: support.dell.com/support/edocs/systems/vos3500/en/SM/… –  david6 Nov 22 '11 at 5:19
    
Random PDF spec: floralimited.com/images/pdf/… –  david6 Nov 22 '11 at 5:23
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