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

I have installed ubuntu 12.04 on my laptop. In live mode, ubuntu booted in "3d" mode. But after installing it would always login in 2d mode. I have nvidia graphics card geforce gt 540m. Should I install any extra packages? What could be the problem?

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1 Answers1

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Have you installed any drivers?

Run sudo add-apt-repository ppa:ubuntu-x-swat/x-updatesin terminal.

Then press ctrl-alt-f1 in desktop and run

sudo /etc/init.d/lightdm stop
sudo apt-get update
sudo apt-get install nvidia-current nvidia-settings
sudo reboot
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