This is due to the installation script doesn't consider that PC variant of grub *may* co-exist. Here's a patch that forces it to install Signed EFI variant of GRUB bootloader instead.
** Patch added: "ubuntu-bug-1751850.patch" https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1751850/+attachment/5135674/+files/ubuntu-bug-1751850.patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1751850 Title: package grub-efi-amd64-signed 1.66.17+2.02~beta2-36ubuntu3.17 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1751850/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
