Requirements:
zcat /proc/config.gz | grep SWITCHEROOmust returnCONFIG_VGA_SWITCHEROO=y- Kernel modesetting must be on from boot
To do this, add nouveau to the MODULES array in /etc/mkinitcpio.conf:
MODULES="... nouveau ..."
then regenerate the initial ramdisk:
mkinitcpio -p linux
Now,