Re: NVidia Quadro 1000M (ThinkPad W520)
To safe battery I usually choose integrated in the bios. However, you might be able to (partly) solf this problem with bumblebee. Bumblebee is a work in progress to support Optimus for linux.
So far I got it to install fine, but I can't get it to shut down the nvidia card completely when it isn't using it, so it is still draining the battery.
We seek to resolve frustration and abide in a comfortable, relaxed mind. We call that 'happiness'. And still I believe in that next upgrade...
--dell xps m1330 t9300 2.5ghz 4gb 320Gb Nvidia 8400m gs--
--lenovo w520 2720QM 8Gb Nvidia Quadro 1000