I have an optimus GPU
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GK107M [GeForce GT 640M] (rev ff)
and I use an external monitor. I have installed Bumblebee (and I use it to run certain sofware with
optirun). I would like to know whether the external monitor (using a VGA cable) is using the Ivy Bridge or Nvidia GPU.
- How can I find that out?