I just found
https://bugs.launchpad.net/ubuntu/xenial/+source/linux/+bug/1820419 -
seems like the same root cause and linux-image-4.4.0-145-generic
mentioned there (in -proposed) worked as I had hoped above (it has a
version check on the Depends: linux-base, which pulls in the needed
script from
I'm not the original reporter, but I hit (and analyzed) what seems to be
the same failure in
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1820755
I just switched our packer template over to -proposed to test this:
i.e. changed it to use http://archive.ubuntu.com/ubuntu/dists/xenial-
I finally came up with a workaround that can be done in a preseed.cfg
(until this can be fixed properly in the kernel image)
d-i preseed/early_command string echo -e "#!/bin/sh\napt-install linux-
base" > /usr/lib/post-base-installer.d/99-bug1820755; chmod +x /usr/lib
Related to #1820755 - although the new linux-base is now available in
xenial-updates, the kernel packages do not version their depends to
demand the new version, so apt-get will not necessarily install it
(which causes base-installer to fail, since debootstrap will not have
upgraded from
Some more info: from http://changelogs.ubuntu.com/changelogs/pool/main/l
/linux-base/linux-base_4.5ubuntu1~16.04.1/changelog, it looks like the
actual cutoff would be Depends: linux-base (>= 4.1)
On the question of workarounds, that confirms why pkgsel/upgrade didn't
work, it's all in the
The missing linux-update-symlinks script seems like it's supposed to
come from linux-base, which appears to exist with the same version
number (4.5ubuntu1~16.04.1), yet different contents, in xenial (no
linux-update-symlinks) and xenial-updates. It appears that this is
because 4.5ubuntu1 is
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