Problem with Ubuntu Server 13.10 on HP proliant DL 360 G7, keyboard unresponsive after boot

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http://askubuntu.com – I have an HP Proliant server, on which I just installed Ubuntu 13.10 from DVD. I have a lot of problems installing from a USB thumb drive (which is another story), but installing from DVD went without a hitch. However, once I boot the server, the keyboard is inoperative. I know that the hardware is good because I can control the boot process that the server goes through with its software in ROM. I can also enter GRUB and boot in single user mode, and I can boot verbosely. I see messages scroll by to the effect that the keyboard and the mouse are recognized and identified correctly. It doe (HowTos)