System version: Gentoo 2.2 Kernel: Gentoo-sources 3.10.4

1. Configure the kernel

Add the following line to /etc/portage/make.conf:

VIDEO_CARDS="nvidia intel"

Configure only the Intel card in the kernel:

Device Drivers ---> Graphics support ---> Intel 8xx/9xx/G3x/G4x/HD Graphics [*] Enable modesetting on intel by default

2. Install the required software

emerge -avt bumblebee

Add the required keywords and flags beforehand.

3. Modify /etc/conf.d/vgl

Find the "XAUTHORITY" line, comment it out, and change it to:

XAUTHORITY=ps ww -C X,Xorg -o args= --sort=-stime | cut -d " " -f 6

4. Add bumblebee to the system startup

rc-update add bumblebee default

5. Test

glxspheres

If the discrete GPU is not enabled, the result is roughly 53M pixels per second.

/etc/init.d/bumblebee start # Start the bumblebee service

optirun glxspheres

At this point, with roughly 150M pixels per second, the test has succeeded.

6. Usage

$ optirun *