Shift detection on UEFI doesn't work on any UEFI platform unfortunately, as the input API cannot detect modifiers on their own.
Escape does work on UEFI platforms, perhaps not Apple for some reason. Keep in mind that we do have boot failure recording, so the GRUB menu does show when it is really necessary. And a timeout can be manually forced in /etc/default/grub -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2002766 Title: On Apple laptops, no key will make a hidden GRUB screen visible To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/2002766/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
