Keyboard does not work with Grub menu - How widespread?

[Chris Tyler]

I have a system where the keyboard doesn't work when the Grub menu is
visible. I opened bug 499836 and see now that there's a second report on
another system with a different brand of motherboard.

This can be a pretty significant problem, making it impossible to boot
directly into runlevel 3 if there's a video issue, for example.

I'm concerned that this problem might be more widespread than reported
but is not being noticed because hiddenmenu is the default unless
another OS is present. If you haven't seen the grub boot menu and are
willing to test:

1. Hold down shift or ctrl during the first part of the boot process,
until the menu appears (with some bioses, you may need to release the
key momentarily a few times). 

2. When the menu is present, you should be able to hit 'e' to edit, 'a'
to append boot arguments, or 'enter' to boot a menu option.

https://bugzilla.redhat.com/show_bug.cgi?id=499836

-Chris