Having same issue after installing Ubuntu 17.10 on Acer ES1-512. Can't change any settings in BIOS. Moreover, system don't recognize any DVD or USB. However, i still can add trusted .efi files, so i installed Windows 10 directly form HDD and doing fine.
Personally, i don't find this problem very critical because i can easily work on windows for 2-3 years. However, i hope that problem will be solved soon so i can get rid of windows and use linux again)
Having same issue after installing Ubuntu 17.10 on Acer ES1-512. Can't change any settings in BIOS. Moreover, system don't recognize any DVD or USB. However, i still can add trusted .efi files, so i installed Windows 10 directly form HDD and doing fine.
Personally, i don't find this problem very critical because i can easily work on windows for 2-3 years. However, i hope that problem will be solved soon so i can get rid of windows and use linux again)