I believe this used to be caused by missing ESP mount points. The current multi-install based postinst doesn't error out in this way, so closing.
** Changed in: grub2 (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1172067 Title: package grub-efi-amd64 2.00-13ubuntu3 failed to install/upgrade: sub- processo script post-installation instalado retornou estado de saída de erro 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1172067/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs