gpu-switch is an application that allows to switch between the graphic cards of dual-GPU Macbook Pro models
gpu-switch is an application to switch between the integrated and dedicated GPU of dual-GPU MacBook Pro models for the next reboot.
It aims to remove the need of booting into OS X and running gfxCardStatus v2.2.1 to switch to the integrated card.
This is new code and it comes without any warranty! It's completely based on reverse engineering. Therefore use it at your own risk and don't blame us if anything breaks.
As root you can select the GPU by running gpu-switch and rebooting your machine:
# ./gpu-switch -i
# ./gpu-switch -d
WARNING: broken on macOS +10.12.4
$ ./build.shto build gpu-switch. OS X can switch between the GPUs without having to reboot the MacBook:
$ ./gpu-switch -i
$ ./gpu-switch -d
$ ./gpu-switch -a
$ ./install_hooks.shcan be used to install Login Hooks to automate the swichting process for login/logout.
By default the Intel GPU gets switched off by the MacBook Pro 11,3's (and 11,5's) EFI if you boot anything but OS X. So to use the Intel GPU, you need to trick the EFI by using the "applesetos" hack either with: - rEFInd version 0.10.0 or above (recommended): http://www.rodsbooks.com/refind
Recent versions of rEFInd have the "applesetos" hack built-in. You can enable it by setting the
spoof_osx_versionoption in your
or - applesetos.efi: https://github.com/0xbb/applesetos.efi
or - a patched GRUB: - https://lists.gnu.org/archive/html/grub-devel/2013-12/msg00442.html - https://wiki.archlinux.org/index.php/MacBookPro11,x#Gettingtheintegratedintelcardtoworkon11.2C3
or - a patched Kernel: https://www.marc.info/?l=grub-deavel&m=141586614924917&w=2
Otherwise you will end up with a powered-down integrated graphics card and a black screen.
If you are facing weird problems a NVRAM reset could help: http://support.apple.com/kb/PH14222?viewlocale=en_US
(Warning: this also resets your EFI boot configuration)
Copyright (C) 2014-2016 Bruno Bierbaumer, Andreas Heider, Malte Bargholz Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.