I have also attempted to verify xenial (using version 1.66.27+2.02_beta2-36ubuntu3.27), however grub-efi- amd64-signed_1.66.27+2.02_beta2-36ubuntu3.27 still seems to be unavailable in -proposed (http://archive.ubuntu.com).
I have manually downloaded it and tested from here [1], however I'll postpone the verification until it's available. [1] https://launchpad.net/ubuntu/+archive/primary/+files/grub-efi- amd64-signed_1.66.27+2.02~beta2-36ubuntu3.27_amd64.deb -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1889556 Title: grub-install failure does not fail package upgrade (and does not roll back to matching modules) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1889556/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs