Public bug reported: After an upgrade from 18.04 to 18.10 the installation of grub-efi- amd64-signed fails due to
`` Setting up grub-efi-amd64-signed (1.110+2.02+dfsg1-5ubuntu8) ... Installing for x86_64-efi platform. Could not prepare Boot variable: Invalid argument grub-install: error: efibootmgr failed to register the boot entry: Input/output error. dpkg: error processing package grub-efi-amd64-signed (--configure): installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1 Errors were encountered while processing: grub-efi-amd64-signed ``` ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: grub-efi-amd64-signed 1.110+2.02+dfsg1-5ubuntu8 ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12 Uname: Linux 4.18.0-10-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.10-0ubuntu13 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Sun Oct 28 12:28:01 2018 SourcePackage: grub2-signed UpgradeStatus: Upgraded to cosmic on 2018-10-21 (6 days ago) ** Affects: grub2-signed (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug cosmic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1800340 Title: installation of grub-efi-amd64-signed fails due to "efibootmgr failed to register the boot entry: Input/output error." To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1800340/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs