Is this really a bug? In my opinion it is not. This is just a user fault. The solution of this problem relies on two basic steps. At first you need to create your Ubuntu 18.04 bootable flash drive correctly. And secondly, you need to bootup you machine using the bootable flash drive in the correct mode (UEFI/CSM/Legacy BIOS). When your system is MBR Partitioned with legacy BIOS and you try to install Ubuntu in UEFI mode, failure of the installation process is natural.
You may want to read more: https://abcsofubuntu.blogspot.com/2018/05/how-to-fix-grub-installation- failed.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767703 Title: Calling 'apt-install grub-efi-amd64-signed' failed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1767703/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
