Thank you for your bug report. It seems you accidentally unmounted /boot/efi, make sure your ESP is mounted there.
** Changed in: grub2-signed (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1936282 Title: package grub-efi-amd64-signed 1.167~16.04.6+2.04-1ubuntu44.1.2 failed to install/upgrade: Unterprozess installiertes post-installation- Skript gab den Fehlerwert 1 zurück To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1936282/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs