Public bug reported: I have tried updating some packaged on Ubuntu 18.04
sudo apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages have been kept back: linux-generic linux-headers-generic linux-image-generic 0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded. 1 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Do you want to continue? [Y/n] Setting up grub-efi-amd64-signed (1.93.16+2.02-2ubuntu8.15) ... Installing for x86_64-efi platform. Could not prepare Boot variable: No space left on device 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 dpkg: dependency problems prevent processing triggers for shim-signed: shim-signed depends on grub-efi-amd64-signed; however: Package grub-efi-amd64-signed is not configured yet. dpkg: error processing package shim-signed (--configure): dependency problems - leaving triggers unprocessed Errors were encountered while processing: grub-efi-amd64-signed shim-signed E: Sub-process /usr/bin/dpkg returned an error code (1) Confirming there is space on the devices: df -h Filesystem Size Used Avail Use% Mounted on udev 16G 0 16G 0% /dev tmpfs 3.2G 2.7M 3.2G 1% /run /dev/mapper/vg_system-lv_system 3.6T 46G 3.4T 2% / tmpfs 16G 0 16G 0% /dev/shm tmpfs 5.0M 8.0K 5.0M 1% /run/lock tmpfs 16G 0 16G 0% /sys/fs/cgroup /dev/sda2 923M 146M 714M 17% /boot /dev/sda1 188M 6.0M 182M 4% /boot/efi /dev/mapper/vg_sqlserver-lv_sqlserver 9.1T 5.9T 2.8T 68% /lv/sqlserver tmpfs 3.2G 0 3.2G 0% /run/user/1000 Confirming there are iNodes free on the devices: df -hi Filesystem Inodes IUsed IFree IUse% Mounted on udev 4.0M 584 4.0M 1% /dev tmpfs 4.0M 903 4.0M 1% /run /dev/mapper/vg_system-lv_system 232M 133K 231M 1% / tmpfs 4.0M 1 4.0M 1% /dev/shm tmpfs 4.0M 6 4.0M 1% /run/lock tmpfs 4.0M 18 4.0M 1% /sys/fs/cgroup /dev/sda2 60K 303 60K 1% /boot /dev/sda1 0 0 0 - /boot/efi /dev/mapper/vg_sqlserver-lv_sqlserver 292M 528 292M 1% /lv/sqlserver tmpfs 4.0M 11 4.0M 1% /run/user/1000 /boot/efi is a separate file system, don't know whether this is supposed to have inodes: fdisk -l /dev/sda Disk /dev/sda: 9.1 TiB, 10000831348736 bytes, 19532873728 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: gpt Disk identifier: E287F2FF-21A8-4061-99AA-FF399C8D6CEE Device Start End Sectors Size Type /dev/sda1 2048 391167 389120 190M EFI System /dev/sda2 391168 2344959 1953792 954M Linux filesystem /dev/sda3 2344960 19532871679 19530526720 9.1T Linux LVM Confirming apt-get install -f does not fix this issue: apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 2 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Setting up grub-efi-amd64-signed (1.93.16+2.02-2ubuntu8.15) ... Installing for x86_64-efi platform. Could not prepare Boot variable: No space left on device 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 dpkg: dependency problems prevent configuration of shim-signed: shim-signed depends on grub-efi-amd64-signed; however: Package grub-efi-amd64-signed is not configured yet. dpkg: error processing package shim-signed (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates its a followup error from a previous failure. Errors were encountered while processing: grub-efi-amd64-signed shim-signed E: Sub-process /usr/bin/dpkg returned an error code (1) Motherboard: ASUS Z97-PRO, Revision 1.xx BIOS American Megatrends Inc., Version 3503 CPU is i7-4790 @ 3.60GHz Memory 32GB (4x8 GB) /dev/sda is a Toshiba 10TB MG06ACA1 with gpt partitioning /dev/sdb is a Toshiba 4TB MG04ACA4 with gpt partitioning ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: ubuntu-release-upgrader-core 1:18.04.37 ProcVersionSignature: Ubuntu 4.15.0-88.88-generic 4.15.18 Uname: Linux 4.15.0-88-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.14 Architecture: amd64 CrashDB: ubuntu Date: Tue Apr 7 15:32:22 2020 InstallationDate: Installed on 2019-10-28 (162 days ago) InstallationMedia: Ubuntu-Server 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) PackageArchitecture: all ProcEnviron: LANGUAGE=en_HK:en TERM=putty-256color PATH=(custom, no user) LANG=en_HK.UTF-8 SHELL=/bin/bash SourcePackage: ubuntu-release-upgrader Symptom: dist-upgrade UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: ubuntu Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic dist-upgrade -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871314 Title: Could not prepare Boot variable: No space left on device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1871314/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs