Running disk integrity check under HWE kernel alternative installer (debian-installer) when booted under UEFI results in corrupted efi.img

[James Hanks]

What I do:
1. Create a USB stick for Ubuntu Server 18.04.2 "alternative installer" ie debian-installer, and boot under UEFI.

2. Check disk integrity (this is not an essential step, but whenever I do this first, the check comes back OK)
3. Select HWE kernel from the installer main menu and then select "check disk integrity" from there.

Expected result: Since I have made multiple USBs from files with SHA256 sums that checked out and reproduced this, I do not think the problem is my media. SHA256 of my iso: a2cb36dc010d98ad9253ea5ad5a07fd6b409e3412c48f1860536970b073c98f5

My result: ./boot/grub/efi.img is reported as corrupted. Even after restarting and running the check from the main menu, which came back OK before, reports the same result.

My issue is documented here as well:
https://askubuntu.com/questions/1149958/ubuntu-server-18-04-2-hwe-kernel-boot-grub-efi-img-file-failed-the-md5-checks

[Kai Kasurinen (kai-kasurinen)]

maybe duplicate of bug 1888033