[Bug 1448668] Re: Grub menu hangs on down arrow press with USB keyboard on cold boot

[Clément R]

I eventually solved it! I'll post my solution here if it can help
anyone.

I realised that the key wasn't "stuck", rather it was more "sensitive"
than it should be. Meaning that GRUB was reading on key press as a dozen
or more (which eventually frozed it).

After some unsuccessful grub configuration, what solved the issue for me was to:
- Reset BIOS / Clear CMOS on my motherboard
- Switch the USB port of the keyboard to a USB2 port.

Note on the second step: I first tried that while grub was running, it had no effect. It's only after rebooting that the problem was fix!
For anyone in the future facing the same issue, I recommend trying the second step first (and make sure that you reboot before each attempt). The first step probably allowed me to fix a hardware malfunction in the BIOS.

For more contexts, here are the discussions I had on the Mint forum that
helped me solve this:
https://forums.linuxmint.com/viewtopic.php?f=46&t=381974

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https://bugs.launchpad.net/bugs/1448668

Title:
  Grub menu hangs on down arrow press with USB keyboard on cold boot

Status in grub2 package in Ubuntu:
  Incomplete

Bug description:
  I installed Windows 8.1 64-bit, then installed Ubuntu 15.04 bit, both
  in UEFI mode.

  When booting, I am presented with the usual GRUB menu, with Ubuntu
  preselected at the top. If I press enter, Ubuntu loads. If I press
  arrow down (just once) to move down the menu toward the Windows entry,
  the highlighted entry skips rapidly to the bottom of the list and GRUB
  hangs and becomes completely non-responsive. Cycling the power or
  pressing reset is required.

  This only happens on a cold boot, i.e. if the computer was off prior
  to going to the GRUB menu. If I get to the GRUB menu via pressing the
  "reset" button, or booting into Ubuntu and choosing "restart", the
  arrow keys work fine in the GRUB menu.

  In addition, this bug only occurs with my USB keyboard (Logitech
  K120), not with my PS/2 keyboard (Logitech Deluxe 250). Trying
  different USB ports doesn't help.

  Summary:

  What happened: GRUB hangs if I press cursor down when using a USB keyboard after a cold boot
  What should happen: I should be able to use arrow down to move down the GRUB boot menu to the entry I require
  To reproduce: Install Windows 8, then install Ubuntu 15.04. Turn off power. Turn on power, boot computer, at GRUB menu press arrow down.

  Presumably all hardware info is attached to report, but just to be
  sure: I'm trying to boot off a GPT partitioned 500GB SSD, and have a
  GA-Z97-D3H motherboard.

  If you need any further information, just ask!

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: grub2 (not installed)
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sun Apr 26 22:34:35 2015
  InstallationDate: Installed on 2015-04-25 (1 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  ProcEnviron:
   LANGUAGE=en_AU:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_AU.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub2
  UpgradeStatus: No upgrade log present (probably fresh install)

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