Ubuntu
grub2-signed package

  1. Bug #1780897
  2. Comment #0

Comment 0 for bug 1780897

Revision history for this message
Steven Clarkson (sclarkson) wrote : Installation failure on UEFI systems with SecureBoot disabled

Regression caused by https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1778848

Steps to reproduce

1) Install ubuntu-18.04-desktop-amd64.iso in a VM using QEMU and OVMF
2) Reboot the VM
3) See GRUB shell instead of GDM

The system can be rescued by running

configfile (hd0,gpt2)/boot/grub/grub.cfg

at the GRUB shell

Installing grub-efi-amd64 in the rescued system then makes it bootable.

Previously grub-efi-amd64-signed depended on grub-efi-amd64, and the system was bootable immediately after installation.

Additionally, the removal of this dependency has resulted in a very sparse /etc/default/grub after installation.

I've attached a simple script for installation with QEMU and OVMF.

I suspect that installs are broken on actual hardware with SecureBoot disabled, but I'm not able to test that right now.