Public bug reported: hmm. I do not really know, what bug this is, but atleast, after upgrading from 15 to 16, I cannot access win7 anymore (dual boot). Other issue. Google Chrome browser is not functional at all..
ProblemType: Package DistroRelease: Ubuntu 16.04 Package: grub-efi-amd64-signed 1.66.16+2.02~beta2-36ubuntu3.16 ProcVersionSignature: Ubuntu 4.13.0-32.35~16.04.1-generic 4.13.13 Uname: Linux 4.13.0-32-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 Date: Thu Feb 8 20:51:52 2018 DuplicateSignature: package:grub-efi-amd64-signed:1.66.16+2.02~beta2-36ubuntu3.16 Setting up grub-efi-amd64-signed (1.66.16+2.02~beta2-36ubuntu3.16) ... grub-install: error: /usr/lib/grub/i386-pc/modinfo.sh doesn't exist. Please specify --target or --directory. dpkg: error processing package grub-efi-amd64-signed (--configure): subprocess installed post-installation script returned error exit status 1 ErrorMessage: subprocess installed post-installation script returned error exit status 1 RelatedPackageVersions: dpkg 1.18.4ubuntu1.3 apt 1.2.24 SourcePackage: grub2-signed Title: package grub-efi-amd64-signed 1.66.16+2.02~beta2-36ubuntu3.16 failed to install/upgrade: subprocess installed post-installation script 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 xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1748268 Title: package grub-efi-amd64-signed 1.66.16+2.02~beta2-36ubuntu3.16 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/1748268/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs