I've done more extensive testing and it seems that when installing grub with the --no-nvram option, all goes well. Setting EFI vars is what mucks up.
** Summary changed: - Grub install fails on Apollo Lake Tablet PC + Grub install fails when writing to NVRAM on Apollo Lake Tablet PC ** No longer affects: ubiquity (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1802570 Title: Grub install fails when writing to NVRAM on Apollo Lake Tablet PC To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1802570/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs