[Bug 1863434] Re: 20.04 grub menu not visible

[playerum]

I have the same problem.

I've installed Windows 10 with Secure Boot enabled, then I've installed
Ubuntu 18.04.5 without Secure Boot, the menu was not displayed, I
thought it was because of the Secure Boot, but...

My notebook (Dell Inspiron 5537) has a battery problem and displays a message asking to press F1 key to continue or F2 for settings. 
I removed the battery and the grub graphical menu was displayed without a problem.

With the battery connected I had to use the `GRUB_TERMINAL=console`
option to show the menu.

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https://bugs.launchpad.net/bugs/1863434

Title:
  20.04 grub menu not visible

Status in grub2 package in Ubuntu:
  Incomplete

Bug description:
  T430
  Ubuntu MATE 20.04

  New installation.

  After initial boot there is a blank black screen where grub should be visible.
  Grub is functional but not visible.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: grub-common 2.04-1ubuntu18
  ProcVersionSignature: Ubuntu 5.4.0-14.17-generic 5.4.18
  Uname: Linux 5.4.0-14-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu16
  Architecture: amd64
  CurrentDesktop: MATE
  Date: Sat Feb 15 09:19:13 2020
  InstallationDate: Installed on 2020-02-14 (0 days ago)
  InstallationMedia: Ubuntu-MATE 20.04 LTS "Focal Fossa" - Alpha amd64 (20200214)
  ProcEnviron:
   LANGUAGE=en_US
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub2
  UpgradeStatus: No upgrade log present (probably fresh install)

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