The Macbook Pro 11,3 (late 2013, Retina) is equipped with two GPUs:
- discrete: NVidia GPU: GeForce GT 750 M
- integrated: Intel Iris Pro
Currently under Linux the Intel GPU can only be used with the help of:
- gfxCardStatus v2.2.1
- faking the os identification:
- https://lists.gnu.org/archive/html/grub-devel/2013-12/msg00442.html
- https://bbs.archlinux.org/viewtopic.php?pid=1368083