[Bug 1897462] Re: GRUB2 freezes after loading at_keyboard

[Mate Kukri]

the at_keyboard module of GRUB takes control of the keyboard controller
from firmware while the firmware is still running, it should come with a
'There be dragons' disclaimer.

additionally at_keybaord doesn't work if you are using a USB keyboard
and the firmware doesnt provide SMM based PS/2 emulation which is about
100% likely on mondern UEFI

** Changed in: grub2 (Ubuntu)
       Status: Triaged => Won't Fix

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Title:
  GRUB2 freezes after loading at_keyboard

Status in grub2 package in Ubuntu:
  Won't Fix

Bug description:
  Try these commands on GRUB command line:

  insmod at_keyboard
  terminal_input at_keyboard console
  terminal_input console

  Now GRUB doesn't accept any keypress.

  Or chainload to another GRUB with at_keyboard active on
  terminal_input. New GRUB cannot controlled by keyboard, but starts
  default menuentry after timeout.

  Module at_keyboard is important for localisation, e.g. using a german
  keyboard layout.

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