I expect this was with GRUB 1.99. Please try GRUB 2.00 in today's images and see whether that helps; there's a decent chance that it will, as EHCI support has been added.
I expect this was with GRUB 1.99. Please try GRUB 2.00 in today's images and see whether that helps; there's a decent chance that it will, as EHCI support has been added.