Comment 8 for bug 1773704

I downloaded the three files you mentioned and tried to install them using 'dpkg -i *.deb' as root. Two of the pkgs installed OK but the kernel proper did not, giving error:

  Selecting previously unselected package linux-image-unsigned-4.15.0-22-generic.
dpkg: regarding linux-image-unsigned-4.15.0-22-generic_4.15.0-22.25_lp1773704_amd64.deb containing linux-image-unsigned-4.15.0-22-generic:
 linux-image-unsigned-4.15.0-22-generic conflicts with linux-image-4.15.0-22-generic
  linux-image-4.15.0-22-generic (version 4.15.0-22.24) is present and installed.

dpkg: error processing archive linux-image-unsigned-4.15.0-22-generic_4.15.0-22.25_lp1773704_amd64.deb (--install):
 conflicting packages - not installing linux-image-unsigned-4.15.0-22-generic

I rebooted the system and as one might expect, the errors in dmesg log persist.

I read up a bit on dpkg hoping I could -f "force" the installation but it appears more complicated than that.

How to proceed? Strange, I've installed test kernels (for this same issue in fact, see bug ID #1710548, which did in fact fix the problem: but the typo in the re-write of the fix that found it's way into the distro uproots the fix).

Again I have to underscore the fact that I've built my own kernels with line 184 changed to be identical to line 187 and the problems are solved.

If that was your approach, please consider your fix to have been successfully tested.

I didn't have much trouble installing the kernels I built so the above errors from dpkg are a mystery to me.