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Possible Duplicate:
How well do laptops with Nvidia Optimus work?

Hi people i have just installed ubuntu 11.10, so i do not know much about it.

My problem is that ubuntu does not recognize my graphic card.

I use intel HD integrated (i3 processor) Nvidia geforce GT 425m.

But ubuntu does not recognice my graphic card, under system info it says Processor: Intel® Core™ i3 CPU M 370 @ 2.40GHz × 4 Graphic:Unknown OS-type:bit

Hope some one can help me.


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marked as duplicate by Lekensteyn, Takkat, Jorge Castro, fossfreedom, Bruno Pereira Feb 5 '12 at 22:10

This question was marked as an exact duplicate of an existing question.

You can try to run jockey (just type jockey in terminal) to see if it will work.

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It's a sandybridge processor, which has an integrated graphics card.

It uses Optimus and there are no official drivers for Linux, which means you can only use the integrated graphics card (the one on your processor). However, there are tricks (like Ironhide) to use your nVidia card. See this this link for information on how to install it.

After it has been installed, open a terminal and enter

optirun glxspheres

If the Mpixels/sec is higher than 100, then it's working.

You can also use this

optirun glxinfo | grep render

Which will output your nVidia card information.

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Ironhide is outdated now, you'd better use Bumblebee 3.0 "Tumbleweed" – Lekensteyn Feb 4 '12 at 13:28
@Lekensteyn I've installed Bumbleebee now, however it gives me significant lower results. I get 98 Mpixels/sec with "optirun glxspheres" whilst I get 150 Mpixels/sec with Ironhide. – Devator Feb 5 '12 at 17:38
for this release, use VGL_READBACK=pbo optirun -c yuv glxspheres (VGL_READBACK=pbo is the key here, -c yuv selects a different transport method). With the VGL_READBACK=pbo option set, some machines perform worse (notably using the nouveau driver) – Lekensteyn Feb 5 '12 at 21:29

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