pipolo

Nobody ? Really ?

Hello ! I also suspected some additional security concerning /sys/firmware/efi/efivars/, so after a few unsuccessful attempts using archlinux-2017.05.01, I downloaded archlinux-2017.03.01 but encountered the same issue (I originally followed the...

Hello bethnull, I found out a workaround described [here](https://forums.macrumors.com/threads/force-2011-macbook-pro-8-2-with-failed-amd-gpu-to-always-use-intel-integrated-gpu-efi-variable-fix.2037591/page-8#post-24615425). Simply boot in single user mode, and carefully type this command : `sudo nvram fa4ce28d-b62f-4c99-9cc3-6815686e30f9:gpu-power-prefs=%01%00%00%00` That should lock your MBP in...

Hello again, Resetting PRAM should force it to startup on your newly installed system. Then you be able to cmd+s to boot into single user mode (I'm pretty sure you...