I have an oldish laptop with GeForce 330M and it has also Intel card with i915 driver in use. The laptop works well with i915 driver, but the other card doesn’t seem to work at all (and I’ve blacklisted its drivers because of that).
But I’d like to use the other card, mostly just to see if it gives any better performance (as it should). I’ve seen many instructions on the web (mostly at archlinux), but so far haven’t been able to get the card working at all (as far as I can tell). I tried nouveau, nvidia, nvidia-340xx, nvidia-304xx and bumblebee but without luck. With nouveau the laptop didn’t crash but used only Intel. With all nvidia’s the laptop either crashed, or showed black screen with a working mouse so that I could go to tty to recover. Maybe the card was actually in use, but didn’t really work that well.
As you can see, I’m not very familiar with graphics cards and their drivers.
Does anybody have any ideas how to make the other card work?