[Bug 1939174] [NEW] GRUB2 can't boot Linux on HP Dragonfly G2

[RussianNeuroMancer]

Public bug reported:

Hello!

On HP Dragonfly G2 GRUB2 can not boot Linux. This issue is not
reproducible with rEFInd or Fedora's GRUB2 (that launch vmlinuz as efi
executable) but reproducible with Ubuntu 20.04.1, 21.04 and 21.10.

After selection kernel in GRUB2 list there is just black screen, also
reading from flash stop right there (judging by led on flash drive).
Removing quiet splash, adding loglevel=10 and/or earlycon=efifb doesn't
change anything, so it's really seems like kernel can not even start
boot process.

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: grub-efi-amd64-bin 2.04-1ubuntu45
Uname: Linux 5.13.8-051308-generic x86_64
ApportVersion: 2.20.11-0ubuntu67
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: GNOME
Date: Sat Aug  7 04:18:17 2021
InstallationDate: Installed on 2021-07-11 (25 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
SourcePackage: grub2-unsigned
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: grub2-unsigned (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug impish wayland-session

** Summary changed:

- GRUB2 on Ubuntu can't boot Linux on HP Dragonfly G2
+ GRUB2 can't boot Linux on HP Dragonfly G2

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https://bugs.launchpad.net/bugs/1939174

Title:
  GRUB2 can't boot Linux on HP Dragonfly G2

Status in grub2-unsigned package in Ubuntu:
  New

Bug description:
  Hello!

  On HP Dragonfly G2 GRUB2 can not boot Linux. This issue is not
  reproducible with rEFInd or Fedora's GRUB2 (that launch vmlinuz as efi
  executable) but reproducible with Ubuntu 20.04.1, 21.04 and 21.10.

  After selection kernel in GRUB2 list there is just black screen, also
  reading from flash stop right there (judging by led on flash drive).
  Removing quiet splash, adding loglevel=10 and/or earlycon=efifb
  doesn't change anything, so it's really seems like kernel can not even
  start boot process.

  ProblemType: Bug
  DistroRelease: Ubuntu 21.10
  Package: grub-efi-amd64-bin 2.04-1ubuntu45
  Uname: Linux 5.13.8-051308-generic x86_64
  ApportVersion: 2.20.11-0ubuntu67
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: GNOME
  Date: Sat Aug  7 04:18:17 2021
  InstallationDate: Installed on 2021-07-11 (25 days ago)
  InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  SourcePackage: grub2-unsigned
  UpgradeStatus: No upgrade log present (probably fresh install)

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