Nvidia Optimus

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https://bbs.archlinux.org – My laptop has two graphic cards (Dell Inspiron N7110):lspci|grep VGA 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 540M] (rev a1)After a clean install, I install the drivers:xf86-video-intelAnd I follow the instructions to install bumblebeeAfter the process I try to run startx but I get error:ERROR:could not insert 'i915': No such device Fatal server error: no screens foundThen I install the drivers: xf86-video-intel-sna but nothi (HowTos)