14.04 - Preseeding 3.16 hardware enablement kernel requires manual update-initramfs

I'm preseeding a 14.04 Trusty install, on a machine which requires a driver fix from the 3.16 kernel, which is the one which goes with 14.10 Utopic. The easiest way to get this kernel is to install the corresponding hardware enablement stack:

http://www.ubuntuupdates.org/package/canonical_kernel_team/trusty/main/base/linux-generic-lts-utopic

When I add the PPA and install the package after installation, it works out fine. However, when I add linux-generic-lts-utopic to the pkgsel/include line in my preseed, I get a kernel panic on first boot into the installed system (happens in Parallels and on the actual hardware). It turns out that I have to use the GRUB menu to first boot the default 3.13 kernel, and then run:

sudo update-initramfs -c -k 3.16.0-17-generic
sudo update-grub

After doing this, it can boot 3.16 just fine.

This seems super janky. Is this a regression in the hardware enablement stack, or a problem with the installer, or something missing from preseed?

Thanks.

For a generalized version of the hack, do:

update-initramfs -c -k $(ls /lib/modules -1 | tail -1)

update-grub

This can be done directly from the late_command, or via a script that the late command invokes.