It is possible that there are different problems but in my case the problem is that efibootmgr cannot delete EFI variable:
root@bor-Latitude-E5450:~# LC_ALL=C grub-install Installing for x86_64-efi platform. Could not delete variable: Invalid argument grub-install: error: efibootmgr failed to register the boot entry: Block device required. or more verbosely grub-install: info: Registering with EFI: distributor = `ubuntu', path = `\EFI\ubuntu\shimx64.efi', ESP at hostdisk//dev/sda,gpt1. grub-install: info: executing efibootmgr --version </dev/null >/dev/null. grub-install: info: executing modprobe -q efivars. grub-install: info: executing efibootmgr -b 0000 -B. Could not delete variable: Invalid argument grub-install: error: efibootmgr failed to register the boot entry: Block device required. It is neither grub nor efibootmgr issue, I cannot remove variable even manually: root@bor-Latitude-E5450:/sys/firmware/efi/efivars# LC_ALL=C rm Boot0000-8be4df61-93ca-11d2-aa0d-00e098032b8c rm: cannot remove 'Boot0000-8be4df61-93ca-11d2-aa0d-00e098032b8c': Invalid argument and stracing it unlinkat(AT_FDCWD, "Boot0000-8be4df61-93ca-11d2-aa0d-00e098032b8c", 0) = -1 EINVAL (Invalid argument) As I do not believe all systems got firmware problem at once, it is more likely kernel issue. There is nothing in dmesg. I do not see how it can be fixed by removing anything in ESP. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1753518 Title: package grub-efi-amd64-signed 1.93+2.02-2ubuntu8 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/1753518/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
