[Bug 1796260] Re: UEFI installation alongside BIOS installation: System fails to boot with cannot find a valid boot entry

[Steve Langasek]

I have tried and failed to reproduce this in a VM.  After installing the
second Ubuntu in UEFI mode, I wind up without any settings persisting in
the nvram store at all, so I just get dropped to the ovmf shell.  That
is a bug in my KVM setup, but it makes it rather difficult to reproduce
the problem.

If you can reproduce this, are you able to boot the ISO again under UEFI
mode?  If you are able to, what is the output of 'efibootmgr -v' after
booting the ISO?

** Changed in: grub2 (Ubuntu)
       Status: New => Incomplete

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Title:
  UEFI installation alongside BIOS installation: System fails to boot
  with cannot find a valid boot entry

Status in grub2 package in Ubuntu:
  Incomplete
Status in ubiquity package in Ubuntu:
  New

Bug description:
  Ubuntu Cosmic Desktop 20181005

  Test Case:
  1. Boot in BIOS mode and install on entire disk
  => Verify that the system boots
  2. Boot in UEFI and perform a new installation alongside previous one
  => Verify that you can boot to the new system

  Actual result
  It fails immediately on boot with a message from the uefi firmware like "Cannot find a valid boot entry" (its very brief because the system reboots immediately in a loop)
  The BIOS installation boots fine if I switch back to BIOS mode.
  An UEFI installation on entire disk boots fine.

  Log files of the UEFI installation attached.

  The EFI partition is created and its content is:
  .
  ./EFI
  ./EFI/ubuntu
  ./EFI/ubuntu/grubx64.efi
  ./EFI/ubuntu/shimx64.efi
  ./EFI/ubuntu/mmx64.efi
  ./EFI/ubuntu/BOOTX64.CSV
  ./EFI/ubuntu/grub.cfg
  ./EFI/BOOT
  ./EFI/BOOT/BOOTX64.EFI
  ./EFI/BOOT/fbx64.efi

  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: ubiquity 18.10.9
  ProcVersionSignature: Ubuntu 4.18.0-8.9-generic 4.18.7
  Uname: Linux 4.18.0-8-generic x86_64
  ApportVersion: 2.20.10-0ubuntu11
  Architecture: amd64
  CasperVersion: 1.396
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Oct  5 09:40:31 2018
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
  LiveMediaBuild: Ubuntu 18.10 "Cosmic Cuttlefish" - Beta amd64 (20181005)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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