Public bug reported: I was installing ubuntu but at the ending part it showed an error about grub boot loader install failure. I tried "boot-repair" tool using the live system and it seemed to be fixed but after restarting the system I had an error message that says grub still has problems...
ProblemType: Package DistroRelease: Ubuntu 18.04 Package: grub-efi-amd64-signed (not installed) ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18 Uname: Linux 4.15.0-29-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20.9-0ubuntu7.2 AptOrdering: NULL: ConfigurePending Architecture: amd64 Date: Fri Oct 26 08:56:00 2018 Df: Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda2 102687672 6489588 90938820 7% / udev 1953388 0 1953388 0% /dev tmpfs 394912 1660 393252 1% /run DpkgTerminalLog: Setting up grub-efi-amd64-signed (1.93.3+2.02-2ubuntu8.2) ... Installing for x86_64-efi platform. grub-install: error: cannot find EFI directory. dpkg: error processing package grub-efi-amd64-signed (--configure): installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1 ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1 Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3ubuntu1 PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1 RelatedPackageVersions: dpkg 1.19.0.5ubuntu2 apt 1.6.3 SourcePackage: grub2-signed Title: package grub-efi-amd64-signed (not installed) failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1 UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: grub2-signed (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-package bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1800106 Title: package grub-efi-amd64-signed (not installed) failed to install/upgrade: installed grub-efi-amd64-signed package post- installation script subprocess returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1800106/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs