And I just had exactly the same problem (failure to modify EFI variable) during update of secureboot-db and again running postinstall script immediately after reboot worked OK.
Silence is becoming ridiculous. What we need is kernel with verbose debug output about handling EFI variables. Right now it is not even clear whether failure is returned by kernel or firmware. -- 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
