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I have a Core i5 520M on my VAIO laptop, with NVIDIA discrete graphics.

According to Intel, it has integrated graphics.

Is there any way to enable it?

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What's the laptop model? – Sathya May 22 '11 at 8:06
VPCCW27FX... no Optimus or anything of the sort. :( – Mehrdad May 22 '11 at 8:11
up vote 1 down vote accepted

Unless your laptop comes with nVidia's Optimus technology, it cannot be enabled for reasons mentioned here

Sony's name is absent in the list of featured laptops. It is also mentioned here that the CW series do not have switchable graphics, so seems like there's no way to do it.

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Aw what... bummer, okay, thanks. +1 – Mehrdad May 22 '11 at 8:12

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