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For some weeks my MacBook 6.2 does not switch to the integrated graphics adapter (Intel HD). This is especially crucial when I work on battery (which happens quite often). I guess the runtime could be enhanced when it would take the HD adapter for display.

I checked that it automatically changes the graphics mode. I am running Snow Leopard 10.6.8.

I recently installed 8GiB RAM (not from Apple). Could this probably related to this issue? Actually I do not want to downgrade or use the expensive Apple RAM.

So, how can I manually turn on the internal graphics adapter?

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gfxCardStatus will let you choose which Graphic Card to use. It has three modes:

  • Dynamic Switching: An alias for the built-in automatic graphics switching feature in OS X.
  • Integrated Only: Forces the more battery-friendly graphics on and disallows automatic switching.
  • Discrete Only: Forces the more power-hungry graphics on and disallows automatic switching.
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Seems quite nice, but sadly I can't use it due to Snow-Leopard 10.6.8. But I found in the source code, where the line probably has to be changed. I'll give it a try. – mistapink Mar 1 '13 at 9:02
gfxCardStatus v1.7 (v2.3 now) did work for Snow Leopard. Perhaps downloading the code from gitHub and rolling back to that version might do the trick. – Thecafremo Mar 1 '13 at 9:15

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