Comment 90 for bug 1788997

To repeat again: I have the kernel as of # 75 installed.

heri@heri-hp-pc:~$ dpkg -l | grep linux-image | grep 4.15
ii linux-image-4.15.0-32-generic 4.15.0-32.35 amd64 Signed kernel image generic
rc linux-image-4.15.0-34-generic 4.15.0-34.37 amd64 Signed kernel image generic
ii linux-image-unsigned-4.15.0-46-generic 4.15.0-46.49 amd64 Linux kernel image for version 4.15.0 on 64 bit x86 SMP

There are as well a pretty large number 4.4.* and 3.* images references, which I have omitted.

heri@heri-hp-pc:~$ apt -a show linux-image-generic
Package: linux-image-generic
Version: 4.15.0.47.49
Priority: optional
Section: kernel
Source: linux-meta
Origin: Ubuntu
Maintainer: Ubuntu Kernel Team <email address hidden>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 15,4 kB
Depends: linux-image-4.15.0-47-generic, linux-modules-extra-4.15.0-47-generic, linux-firmware, intel-microcode, amd64-microcode
Recommends: thermald
Supported: 5y
Download-Size: 2.412 B
APT-Sources: http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
Description: Generic Linux kernel image
 This package will always depend on the latest generic kernel image
 available.

Package: linux-image-generic
Version: 4.15.0.20.23
Priority: optional
Section: kernel
Source: linux-meta
Origin: Ubuntu
Maintainer: Ubuntu Kernel Team <email address hidden>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 14,3 kB
Depends: linux-image-4.15.0-20-generic, linux-modules-extra-4.15.0-20-generic, linux-firmware
Recommends: thermald
Breaks: flash-kernel (<< 3.90ubuntu2), s390-tools (<< 2.3.0-0ubuntu3)
Supported: 5y
Download-Size: 2.660 B
APT-Sources: http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
Description: Generic Linux kernel image
 This package will always depend on the latest generic kernel image
 available.

By the way https://wiki.ubuntu.com/Testing/EnableProposed is not up-to-date with respect to bionic, as there is no option to select pre-released updates under the "Updates" tab. One has to enable the option under the "development" tab.