loading i915 with two graphics cards

Francois Tigeot ftigeot at wolfpond.org
Thu Jul 28 02:45:50 PDT 2016

On Thu, Jul 28, 2016 at 10:49:26AM +0200, Pedro Andres Aranda Gutierrez wrote:
> Similar problem here with an ASUS with nVidia Optimus... So it's not Mac
> specific...

Well, in a way it is.

If I'm not mistaken, most Optimus devices have their video outputs directly
connected to the Intel GPU so it's just a matter of disabling the NVidia one.

On at least some Macbook models, the video output are connected to a third
chip, and this chip must also be told to talk exclusively to the Intel GPU at
boot time first.

Francois Tigeot

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