1.6.11/bionic: I installed linux-image-unsigned-5.0.0-15-generic; and I see ^linux-image-unsigned-5\.0\.0-15-generic$" in the NeverAutoRemove list.
1.6.11/bionic: I installed linux-image- unsigned- 5.0.0-15- generic; and I see ^linux- image-unsigned- 5\.0\.0- 15-generic$ " in the NeverAutoRemove list.