Change in /var/lib/dpkg/info/grub-efi-amd64-signed.postinst "grub-install" to "grub-install --efi-directory=/boot/efi" Then apt-get install. Helped for me. For shim-signed could be similar.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1571925 Title: grub-install: error: cannot find EFI directory. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1571925/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
