Ubuntu 18.04 PXE issue

This might help... sounds more like a problem in your preseed.

https://help.ubuntu.com/lts/installation-guide/amd64/apb.html
https://github.com/xobs/debian-installer/blob/master/doc/devel/partman-auto-recipe.txt

One other suggestion. Can you install the machine manually by pxebooting the installer WITHOUT that preseed, and manually performing the install?

And finally, does any of this work via MAAS?

This is the comments passed by internal team.

Hello Jeff,

Even Manual PXE runs into the same problem. Have tried solutions from the link you provided but no luck.

Any other suggestions on this?

Regards,
Vinodh

OK... so how exactly are you PXE booting and what image are you using, exactly?

I am unable to recreate this myself in VMs... Michael may have other ideas too.

So from Comment #8 above, what image are you using, exactly to attempt this?

and further questions:

And are you sure you're using the 18.04 netboot images?

How exactly (what steps did you take) to set up TFTP to serve the netboot images.

How exactly (what steps did you take) to set up the ISO image for PXE/Network installation?

From your comments so far, it sounds like a driver issue in the initrd.gz image for netbooting. What hardware is this?

I see this in my environment with UCS blade servers as well. I believe we are probably using the same server iso as BP that I downloaded from Canonical and copied to our repo. I am using the same procedure and preseed file that we use for xenial and trusty releases which work. This is being tested with Cisco UCS B200M4 currently.

I suspect there may be a change needed with the preseed file for bionic but haven't had much time to troubleshoot yet but just wanted to provide some data for the bug. We are using the alternative ubuntu server install for advanced networking/storage, not the live server.

http://cdimage.ubuntu.com/releases/18.04.1/release/ubuntu-18.04.1-server-amd64.iso

I was getting a timeout error with posting the comment so I copied the steps over to a .txt file and attaching to the comment. I can try using the hwe-netboot images and see if that works later today.