Comment 20 for bug 1751813

When booting proposed images which have not yet migrated to the release pocket, one must also specify 'apt-setup/proposed=true' and the mirror you use must have up to date bionic-proposed.

It is best to not download d-i from ports.ubuntu.com, but instead please use your local mirror - to ensure the d-i published there, matches the available kernel udebs on your mirror. You should be mirroring main/installer-* and main/debian-installer/*.

Also please specify which d-i serial number is in use. (check /var/lib/dpkg/info for the debian-installer package) or instead of the symlink url /current/ use the one with the build serial and let me know which one that is.

Also note, that 20101020ubuntu535 build serial has migrated to bionic-release, thus if you are using 20101020ubuntu535 or later, with an up to date mirror, 'apt-setup/proposed=true' should not be needed and you should have access to all the latest kernel modules.

If you do not, please check that your mirror is up to date. It was fully published on 2018-03-27 03:04:31 BST, together with the 4.15.0-13.14 kernel. Is 20101020ubuntu535 d-i synced to your internal mirror yet?

I am marking this bug report incomplete until you provide the d-i serial number in use.

(please note, this is not the first time that d-i erorrs are reported _without_ specifying d-i serial number in use. Without d-i serial number, it is very hard to speculate and assist with your queries.)