keyboard works in BIOS & GRUB but not during boot

[NoOp]

On 09/06/2011 04:16 PM, scar wrote:
> i just installed ubuntu 10.04 alongside a machine with windows xp on it,
> and the installation went well.  i resized the windows partition and
> installed ubuntu to an encrypted partition.  the keyboard works in BIOS
> and in GRUB, but, after that, when it is booting and asking me for the
> passphrase to unlock the drive, i cannot enter it.  also the num lock
> doesn't turn on/off at this point either.  i'm just using a run of the
> mill USB keyboard and mouse.  the keyboard/mouse work fine when i boot
> into windows also.
> 
> 

Awhile back I had a similar issue with a Dell USB keyboard and 8.04. The
issue was a bios setting. Following is my response to the customer
(which resolved her issue) & perhaps it might be the same with your system:

====
  The problem is that the bios is set to have the operating system
control the USB keyboard & Grub isn't an OS. So the keyboard doesn't get
reactivated again until Ubuntu starts. There is a way to fix this:

1. Shut down the computer.
2. Turn on the computer and as soon as it starts press DEL (I think
it's DEL for that machine, if not try F2 or F1) so that it starts the
BIOS manager.
3. Look for a USB Keyboard setting in the BIOS menus and if available
select so that it does not depend on the OS. I forget what the exact
menu is, but if you poke in around BIOS you should be able to find it.
Don't change anything else, only the USB keyboard setting!. Save and
boot.
====

Note: I realize that your system /works/ with the grub menu, so the info
isn't the same. But you might want to check your bios settings anyway
just to see if the settings make a difference.