This appears to be bug #1781001, which was fixed in dkms 2.3-3ubuntu9.2 for bionic. Have you not upgraded to the current version of the dkms package from bionic-updates?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1827697 Title: Enroll key whiptail prompt blocks kernel header package upgrades To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim-signed/+bug/1827697/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
