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I installed Ubuntu 12.04 and bumblebee on my Lenovo w530 which comes with NVIDIA Optimus card by following this wiki: Ubuntu wiki

I am trying to use the DVI ports (2 ports) on my docking station to extend the display. It does not work and I can not even get any output on my VGA.

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probably your VGA Port is wired to the nvidia chip

Greetings isten

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